ABSTRACT OBJECTIVE The COVID-19 pandemic has raised numerous concerns regarding its effects on individuals’ health and lifestyle. We aim to analyze potential changes in adolescent sleep patterns from before and during the pandemic and identify specific predictors of changes. METHODS A subgroup of adolescents from a population-based birth cohort from Pelotas, Brazil, was assessed pre-pandemic (T1, November-2019 to March-2020) and peri-pandemic (T2, August-2021 to December-2021) in in-person interviews (n = 1,949). Sleep parameters, including sleep duration and latency time on workdays and free days, as well as social jetlag (SJL), were assessed using the Munich ChronoType Questionnaire (MCTQ). Socio-demographic, pre-pandemic, and pandemic-related predictors were analyzed. Changes in sleep parameters from T1 to T2 were estimated by multivariate latent change score modeling. RESULTS The latent change factor shows a significant mean increase in workday sleep duration (M = 0.334, p < 0.001), workday sleep latency (M = 0.029, p = 0.002), and free day sleep latency (M = 0.021, p = 0.034), and a decreased in SJL (M = −0.758, p < 0.001) during the pandemic. Female adolescents presented higher increases in workday sleep duration. Adolescents who adopted a stricter social distancing level during the pandemic presented greater increases in workday sleep duration and smaller reductions in SJL. Self-evaluated insomnia during the pandemic predicted lower increases in workday and free day sleep duration and higher increases in workday and free day sleep latency. CONCLUSION The COVID-19 outbreak brought certain advantages regarding increased sleep duration and reduced SJL. However, the observed increase in sleep latency and the influence of self-reported insomnia could be related to psychological distress inherent to the pandemic. COVID19 COVID 19 COVID-1 individuals lifestyle populationbased population based Pelotas Brazil prepandemic pre T1, T (T1 November2019 November 2019 November-201 March2020 March 2020 March-2020 peripandemic peri T2, (T2 August2021 August 2021 August-202 December2021 December December-2021 inperson person n 1,949. 1949 1,949 . 1 949 1,949) days SJL, , (SJL) MCTQ. MCTQ (MCTQ) Sociodemographic, Sociodemographic Socio demographic, demographic Socio-demographic prepandemic, pandemic, pandemicrelated analyzed modeling M 0334 0 334 0.334 0.001, 0001 0.001 001 0029 029 0.029 0.002, 0002 0.002 002 0.002) 0021 021 0.021 0.034, 0034 0.034 034 0.034) 0758 758 −0.758 Selfevaluated Self evaluated However selfreported self reported COVID1 COVID- (T November201 201 November-20 March202 202 March-202 August202 August-20 December202 December-202 194 1,94 94 (SJL (MCTQ 033 33 0.33 000 0.00 00 02 0.02 003 0.03 03 075 75 −0.75 November20 20 November-2 March20 March-20 August20 August-2 December20 December-20 1,9 9 3 0.3 0.0 07 7 −0.7 November2 2 November- March2 March-2 August2 August- December2 December-2 1, 0. −0. March- December- −0 −

ABSTRACT OBJECTIVE The COVID-19 pandemic has raised numerous concerns regarding its effects on individuals’ health and lifestyle. We aim to analyze potential changes in adolescent sleep patterns from before and during the pandemic and identify specific predictors of changes. METHODS A subgroup of adolescents from a population-based birth cohort from Pelotas, Brazil, was assessed pre-pandemic (T1, November-2019 to March-2020) and peri-pandemic (T2, August-2021 to December-2021) in in-person interviews (n = 1,949). Sleep parameters, including sleep duration and latency time on workdays and free days, as well as social jetlag (SJL), were assessed using the Munich ChronoType Questionnaire (MCTQ). Socio-demographic, pre-pandemic, and pandemic-related predictors were analyzed. Changes in sleep parameters from T1 to T2 were estimated by multivariate latent change score modeling. RESULTS The latent change factor shows a significant mean increase in workday sleep duration (M = 0.334, p < 0.001), workday sleep latency (M = 0.029, p = 0.002), and free day sleep latency (M = 0.021, p = 0.034), and a decreased in SJL (M = −0.758, p < 0.001) during the pandemic. Female adolescents presented higher increases in workday sleep duration. Adolescents who adopted a stricter social distancing level during the pandemic presented greater increases in workday sleep duration and smaller reductions in SJL. Self-evaluated insomnia during the pandemic predicted lower increases in workday and free day sleep duration and higher increases in workday and free day sleep latency. CONCLUSION The COVID-19 outbreak brought certain advantages regarding increased sleep duration and reduced SJL. However, the observed increase in sleep latency and the influence of self-reported insomnia could be related to psychological distress inherent to the pandemic.

Objective: To investigate risk factors associated with impaired attention-related executive functions (EFs) at age 11 and working memory at age 15. Methods: Data from participants of the population-based 2004 Pelotas Birth Cohort at ages 11 (n=3,582) and 15 (n=1,950) were analyzed. The study measured attentional control, cognitive flexibility, and selective attention using the Test of Everyday Attention for Children (TEA-Ch). Spatial working memory was assessed by the Cambridge Neuropsychological Test Automated Battery (CANTAB). Logistic regression was employed to explore the relationship between perinatal and childhood exposures and EF impairment. Results: Low maternal education had a significant negative impact on EFs. At age 11, it was associated with decreased attentional control (OR = 3.04; 95%CI 2.09-4.43), and at age 15, it was linked to impaired spatial working memory (OR = 2.21; 95%CI 1.58-3.09). Additional risk factors included low household income, black or brown maternal skin color, high parity, prematurity, low birth weight, and multiple siblings. Breastfeeding, regardless of duration, was found to be a protective factor against impaired cognitive flexibility (OR = 0.38; 95%CI 0.22-0.65). Conclusion: This study underscores the lasting impact of perinatal exposures on EF development. Policies that mitigate the negative effects of risk factors and promote EF development, especially among vulnerable populations, are needed. Objective attentionrelated related EFs (EFs 1 Methods populationbased population based 200 n=3,582 n3582 n 3 582 (n=3,582 n=1,950 n1950 950 (n=1,950 analyzed TEACh. TEACh TEA Ch . (TEA-Ch) CANTAB. CANTAB (CANTAB) impairment Results OR 3.04 304 04 95CI CI 95 2.094.43, 209443 2.09 4.43 , 2 09 4 43 2.09-4.43) 2.21 221 21 1.583.09. 158309 1.58 3.09 58 1.58-3.09) income color parity prematurity weight siblings Breastfeeding duration 0.38 038 0 38 0.220.65. 022065 0.22 0.65 22 65 0.22-0.65) Conclusion development populations needed 20 n=3,58 n358 (n=3,58 n=1,95 n195 (n=1,95 (TEA-Ch (CANTAB 3.0 30 9 094 2.094.43 20944 209 2.0 443 4.4 2.09-4.43 2.2 583 1.583.09 15830 158 1.5 309 5 1.58-3.09 0.3 03 220 0.220.65 02206 022 0.2 065 0.6 6 0.22-0.65 n=3,5 n35 (n=3,5 n=1,9 n19 (n=1,9 3. 2.094.4 2094 2. 44 4. 2.09-4.4 1.583.0 1583 1. 1.58-3.0 0. 0.220.6 0220 02 06 0.22-0.6 n=3, n3 (n=3, n=1, n1 (n=1, 2.094. 2.09-4. 1.583. 1.58-3. 0.220. 0.22-0. n=3 (n=3 n=1 (n=1 2.094 2.09-4 1.583 1.58-3 0.220 0.22-0 n= (n= 2.09- 1.58- 0.22- (n

Objectives: There is growing interest in examining the impacts of the coronavirus disease 2019 (COVID-19) pandemic on adolescent socioemotional development. This study aimed to examine changes in adolescent emotion regulation (ER), self-esteem (SE), and locus of control (LoC) from before to during the pandemic in a Brazilian birth cohort, and to investigate the variables associated with changes in those socioemotional competences. Methods: 1,949 adolescents from the 2004 Pelotas Birth Cohort were assessed before (T1, November 2019 to March 2020) and during (T2, August to December 2021) the COVID-19 pandemic (mean ages [SD] = 15.69 [0.19] and 17.41 [0.26], respectively). Adolescents’ socioemotional competences were assessed, including ER, SE, and LoC. Sociodemographic, pre-pandemic, and pandemic-related correlates were examined as predictors of change. Multivariate latent change score models were used in the analyses. Results: There were significant mean increases in adolescents’ ER and SE (mean ER = 1.918, p < 0.001; mean SE = 1.561, p = 0.001) and a significant mean decrease (towards internalization) in LoC levels (MLoC = -0.497, p < 0.01) during the pandemic. Factors that predicted a lower competency increase included family conflicts, harsh parenting, and maternal depressive symptoms during the pandemic. Conclusion: Despite the stress imposed by the COVID-19 pandemic, the adolescents of this cohort showed positive development in their socioemotional competences. Family-related factors emerged as important predictors of adolescent socioemotional adjustment during the study period. Objectives 201 COVID19 COVID 19 (COVID-19 , (ER) selfesteem self esteem (SE) (LoC Methods 1949 1 949 1,94 200 T1, T1 T (T1 2020 T2, T2 (T2 2021 COVID-1 SD [SD 1569 15 69 15.6 0.19 019 0 [0.19 1741 17 41 17.4 0.26, 026 0.26 26 [0.26] respectively. respectively . respectively) Adolescents Sociodemographic prepandemic, prepandemic pre pre-pandemic pandemicrelated related analyses Results 1918 918 1.918 0.001 0001 001 1561 561 1.561 towards internalization MLoC 0.497, 0497 497 -0.497 0.01 01 conflicts parenting Conclusion Familyrelated Family period 20 COVID1 (COVID-1 (ER (SE 194 94 1,9 (T 202 COVID- 156 6 15. 0.1 [0.1 174 4 17. 02 0.2 2 [0.26 191 91 1.91 0.00 000 00 56 1.56 0.497 049 49 -0.49 0.0 (COVID- 9 1, 0. [0. [0.2 1.9 5 1.5 0.49 04 -0.4 (COVID [0 1. 0.4 -0. [ -0 -

Objectives: The objective of this study was to investigate the prevalence of the following risk behaviors: experimentation with cigarettes, electronic cigarettes, alcohol, substances, delinquent behavior, and sex at age 15, stratified by sex and socioeconomic position. We also investigated the prevalence of cigarette and alcohol experimentation at age 11 and the persistence and cumulative incidence of these behaviors between 11 and 15 years of age. Methods: In this cohort study, we included 3,491 11-year-olds and 1,949 15-year-olds from the 2004 Pelotas Birth Cohort. All outcomes were identified via confidential questionnaires and were analyzed as binary variables. Results: At age 11, there was a higher prevalence of cigarette experimentation among boys. At age 15, there was a higher prevalence of experimentation with alcohol, cigarettes, and substances among girls; experimentation with cigarettes and sex were more prevalent among those in a low socioeconomic position. We found a high cumulative incidence of alcohol experimentation, as well as persistent alcohol experimentation, in both boys and girls. Conclusions: Further research should clarify causal paths of the high prevalence of risk behaviors during adolescence and its increase among girls. Objectives behavior position 1 Methods 3491 3 491 3,49 11yearolds yearolds year olds 1949 949 1,94 15yearolds 200 Cohort variables Results girls Conclusions 349 49 3,4 194 94 1,9 20 34 4 3, 19 9 1, 2

RESUMO Objetivo: Descrever a prevalência de duração do sono, latência, insônia terminal, qualidade subjetiva do sono e sonolência diurna excessiva entre participantes de coortes de nascimentos realizadas em três cidades brasileiras, bem como avaliar as diferenças nas taxas de prevalência das coortes de acordo com características sociodemográficas. Métodos: Análises transversais envolvendo participantes de quatro coortes de nascimento realizadas em Ribeirão Preto (RP78 e RP94), Pelotas (PEL93) e São Luís (SL97). A duração, a latência, a insônia terminal e a qualidade subjetiva do sono foram obtidas por meio do Índice de Qualidade do Sono de Pittsburgh; e a sonolência diurna excessiva foi avaliada pela Escala de Sonolência de Epworth. As diferenças na prevalência dos desfechos foram analisadas em cada coorte segundo características sociodemográficas estratificadas por sexo. Resultados: A duração insuficiente do sono foi o desfecho mais comum nas quatro coortes, com maior frequência entre os homens. Latência longa foi mais frequentemente relatada por mulheres adultas jovens nas coortes RP94 e PEL93, e insônia por mulheres das quatro coortes, quando comparadas a homens da mesma idade. As mulheres geralmente sofriam mais com sonolência diurna excessiva e avaliavam a qualidade do sono de forma mais negativa do que os homens. Além do sexo, ser estudante e trabalhar estiveram associados ao maior número de desfechos em ambos os sexos. Conclusão: Os distúrbios do sono são mais prevalentes em mulheres, reforçando a necessidade de maior investimento na saúde do sono no Brasil, sem desconsiderar gênero e determinantes socioeconômicos.

ABSTRACT Objective: To describe the prevalence of insufficient sleep duration, long sleep latency, terminal or maintenance insomnia, subjective sleep quality, and excessive daytime sleepiness among participants of birth cohorts conducted in three Brazilian cities, and to evaluate differences in prevalence rates within cohorts according to sociodemographic characteristics. Methods: Cross-sectional analyses involving adolescents and adults participating in four birth cohorts conducted in Ribeirão Preto (RP78 and RP94), Pelotas (PEL93) and São Luís (SL97/98). Sleep duration, latency, terminal or maintenance insomnia, and subjective sleep quality were obtained through the Pittsburgh Sleep Quality Index; and excessive daytime sleepiness was assessed using the Epworth Sleepiness Scale. Differences in the prevalence of the outcomes were analyzed in each cohort according to sociodemographic characteristics (skin color, marital status, socioeconomic status, study and working at the time of the interview) stratified by sex. Results: Insufficient sleep duration was the most common outcome at the four cohorts, with higher frequency among men. Long latency was more frequently reported by young adult women in RP94 and PEL93 cohorts, and insomnia by women of the four cohorts, when compared to men of the same age. Women generally suffered more from excessive daytime sleepiness and evaluated the quality of their sleep more negatively than men. In addition to sex, being a student and working were associated with the largest number of outcomes in both sexes. Conclusion: Sleep disorders are more prevalent in women, reinforcing the need for greater investment in sleep health in Brazil, without disregarding gender and socioeconomic determinants.

ABSTRACT Objective: To describe the prevalence of insufficient sleep duration, long sleep latency, terminal or maintenance insomnia, subjective sleep quality, and excessive daytime sleepiness among participants of birth cohorts conducted in three Brazilian cities, and to evaluate differences in prevalence rates within cohorts according to sociodemographic characteristics. Methods: Cross-sectional analyses involving adolescents and adults participating in four birth cohorts conducted in Ribeirão Preto (RP78 and RP94), Pelotas (PEL93) and São Luís (SL97/98). Sleep duration, latency, terminal or maintenance insomnia, and subjective sleep quality were obtained through the Pittsburgh Sleep Quality Index; and excessive daytime sleepiness was assessed using the Epworth Sleepiness Scale. Differences in the prevalence of the outcomes were analyzed in each cohort according to sociodemographic characteristics (skin color, marital status, socioeconomic status, study and working at the time of the interview) stratified by sex. Results: Insufficient sleep duration was the most common outcome at the four cohorts, with higher frequency among men. Long latency was more frequently reported by young adult women in RP94 and PEL93 cohorts, and insomnia by women of the four cohorts, when compared to men of the same age. Women generally suffered more from excessive daytime sleepiness and evaluated the quality of their sleep more negatively than men. In addition to sex, being a student and working were associated with the largest number of outcomes in both sexes. Conclusion: Sleep disorders are more prevalent in women, reinforcing the need for greater investment in sleep health in Brazil, without disregarding gender and socioeconomic determinants. Objective cities Methods Crosssectional Cross sectional RP78 RP (RP7 RP94, , RP94) PEL (PEL93 SL97/98. SL9798 SL SL97/98 . SL97 98 (SL97/98) Index Scale skin color status interview sex Results RP9 PEL9 age sexes Conclusion Brazil determinants RP7 (RP (PEL9 SL979 SL97/9 SL9 9 (SL97/98 (PEL SL97/ (SL97/9 (SL97/ (SL97 (SL9 (SL

RESUMO Objetivo: Descrever a prevalência de duração do sono, latência, insônia terminal, qualidade subjetiva do sono e sonolência diurna excessiva entre participantes de coortes de nascimentos realizadas em três cidades brasileiras, bem como avaliar as diferenças nas taxas de prevalência das coortes de acordo com características sociodemográficas. Métodos: Análises transversais envolvendo participantes de quatro coortes de nascimento realizadas em Ribeirão Preto (RP78 e RP94), Pelotas (PEL93) e São Luís (SL97). A duração, a latência, a insônia terminal e a qualidade subjetiva do sono foram obtidas por meio do Índice de Qualidade do Sono de Pittsburgh; e a sonolência diurna excessiva foi avaliada pela Escala de Sonolência de Epworth. As diferenças na prevalência dos desfechos foram analisadas em cada coorte segundo características sociodemográficas estratificadas por sexo. Resultados: A duração insuficiente do sono foi o desfecho mais comum nas quatro coortes, com maior frequência entre os homens. Latência longa foi mais frequentemente relatada por mulheres adultas jovens nas coortes RP94 e PEL93, e insônia por mulheres das quatro coortes, quando comparadas a homens da mesma idade. As mulheres geralmente sofriam mais com sonolência diurna excessiva e avaliavam a qualidade do sono de forma mais negativa do que os homens. Além do sexo, ser estudante e trabalhar estiveram associados ao maior número de desfechos em ambos os sexos. Conclusão: Os distúrbios do sono são mais prevalentes em mulheres, reforçando a necessidade de maior investimento na saúde do sono no Brasil, sem desconsiderar gênero e determinantes socioeconômicos. Objetivo latência brasileiras Métodos RP78 RP (RP7 RP94, , RP94) PEL93 PEL (PEL93 SL97. SL97 SL . (SL97) Pittsburgh Epworth sexo Resultados RP9 idade sexos Conclusão Brasil socioeconômicos RP7 (RP PEL9 (PEL9 SL9 (SL97 (PEL (SL9 (SL

O objetivo foi investigar distúrbios do sono e fatores sociodemográficos e comportamentais associados. Foi realizado um censo com universitários. Perguntas extraídas do Munich Chronotype Questionnaire investigaram: duração insuficiente do sono (< 6 horas/dia para < 65 anos e < 5 horas/dia para os demais), latência longa (> 30 minutos), baixa qualidade autopercebida, despertares noturnos (involuntários, no meio da noite) e sonolência diurna (dificuldade de concentração). Variáveis independentes englobaram características sociodemográficas e comportamentais. Análises ajustadas foram feitas com regressão de Poisson. Dos 1.865 estudantes, 32% apresentaram sono insuficiente nos dias de aula, 8,2% sono insuficiente nos finais de semana, 18,6% latência longa nos dias de aula, 17,2% latência longa nos finais de semana, 30% baixa qualidade autopercebida, 12,7% despertares noturnos e 32,2% sonolência diurna. O maior consumo de álcool esteve associado à duração insuficiente e latência longa nos dias de aula, baixa qualidade, despertares e sonolência; tabagismo com duração insuficiente nos finais de semana, despertares e baixa qualidade; e cor da pele preta ou parda com duração insuficiente nos dias de aula, baixa qualidade e despertares. Ter aulas de manhã associou-se a sono insuficiente nos dias de aula e sonolência diurna, e o sexo feminino, sonolência, baixa qualidade e despertares. Os distúrbios de sono mais frequentes foram sono insuficiente nos dias de aula, baixa qualidade autopercebida e sonolência diurna. O consumo de álcool e cigarros e a cor preta ou parda foram os principais fatores associados aos distúrbios.

The objective was to investigate sleep disorders and associated sociodemographic and behavioral factors. A census of university students was carried out. Questions extracted from the Munich Chronotype Questionnaire investigated: insufficient sleep duration (< 6 hours/day for < 65 years and < 5 hours/day for other ages), long latency (> 30 minutes), low self-rated sleep quality, nocturnal awakenings (involuntary, in the middle of the night), and daytime sleepiness (difficulty concentrating). Independent variables included sociodemographic and behavioral characteristics. Adjusted analyses were performed with Poisson regression. Of the 1,865 students, 32% exhibited insufficient sleep on class days, 8.2% insufficient sleep on weekends, 18.6% long latency on class days, 17.2% long latency on weekends, 30% low self-rated sleep quality, 12.7% nocturnal awakenings, and 32.2% daytime sleepiness. Higher alcohol consumption was associated with insufficient sleep duration and long latency on class days, low quality sleep, awakenings, and daytime sleepiness. Smoking was associated with insufficient sleep duration on weekends, awakenings, and low-quality sleep. Black and brown skin color were associated with insufficient sleep duration on class days, low-quality sleep, and awakenings. Morning classes were associated with insufficient sleep and daytime sleepiness. Female gender was associated with low-quality sleep and awakenings. The most frequent sleep disorders were insufficient sleep on class days, low self-rated quality of sleep, and daytime sleepiness. Alcohol consumption and smoking and black and brown skin color were the principal factors associated with sleep disorders.

El objetivo fue investigar trastornos del sueño, factores sociodemográficos y de comportamiento asociados. Fue realizado un censo con los estudiantes universitarios. Las preguntas extraídas del Munich Chonotype Questionnaire investigaron: duración insuficiente del sueño (< 6 horas/día para < 65 años y < 5 horas/día para los demás), latencia prolongada (> 30 minutos), baja calidad autopercibida, vigilias (involuntarias, en medio de la noche) y somnolencia diurna (dificultad de concentración). Las variables independientes englobaron características sociodemográficas y de comportamiento. Se realizaron análisis ajustados con regresión de Poisson. De los 1.865 estudiantes, un 32% presentaron sueño insuficiente durante los días de clase, un 8,2% sueño insuficiente los fines de semana, un 18,6% latencia prolongada durante los días de clase, un 17,2% latencia prolongada durante los fines de semana, un 30% baja calidad autopercibida, un 12,7% vigilias y un 32,2% somnolencia diurna. El mayor consumo de alcohol se asoció a la duración insuficiente y latencia prolongada los días de clase, baja calidad de sueño, vigilias y somnolencia; el tabaquismo con duración insuficiente de sueño durante los fines de semana, vigilias y baja calidad de sueño, así como color de piel negro o mulato con una duración insuficiente de sueño durante los días de clase, baja calidad del mismo y vigilias. Tener clases por la mañana se asoció a sueño insuficiente durante los días de clase, somnolencia diurna, y el sexo femenino con somnolencia, baja calidad y vigilias. Los disturbios de sueño más frecuentes fueron sueño insuficiente durante los días de clase, baja calidad autopercibida y somnolencia diurna. El consumo de alcohol y cigarrillos, así como el color negro o mulato fueron los principales factores asociados a los disturbios.

O objetivo foi investigar distúrbios do sono e fatores sociodemográficos e comportamentais associados. Foi realizado um censo com universitários. Perguntas extraídas do Munich Chronotype Questionnaire investigaram: duração insuficiente do sono (< 6 horas/dia para < 65 anos e < 5 horas/dia para os demais), latência longa (> 30 minutos), baixa qualidade autopercebida, despertares noturnos (involuntários, no meio da noite) e sonolência diurna (dificuldade de concentração). Variáveis independentes englobaram características sociodemográficas e comportamentais. Análises ajustadas foram feitas com regressão de Poisson. Dos 1.865 estudantes, 32% apresentaram sono insuficiente nos dias de aula, 8,2% sono insuficiente nos finais de semana, 18,6% latência longa nos dias de aula, 17,2% latência longa nos finais de semana, 30% baixa qualidade autopercebida, 12,7% despertares noturnos e 32,2% sonolência diurna. O maior consumo de álcool esteve associado à duração insuficiente e latência longa nos dias de aula, baixa qualidade, despertares e sonolência; tabagismo com duração insuficiente nos finais de semana, despertares e baixa qualidade; e cor da pele preta ou parda com duração insuficiente nos dias de aula, baixa qualidade e despertares. Ter aulas de manhã associou-se a sono insuficiente nos dias de aula e sonolência diurna, e o sexo feminino, sonolência, baixa qualidade e despertares. Os distúrbios de sono mais frequentes foram sono insuficiente nos dias de aula, baixa qualidade autopercebida e sonolência diurna. O consumo de álcool e cigarros e a cor preta ou parda foram os principais fatores associados aos distúrbios.

The objective was to investigate sleep disorders and associated sociodemographic and behavioral factors. A census of university students was carried out. Questions extracted from the Munich Chronotype Questionnaire investigated: insufficient sleep duration (< 6 hours/day for < 65 years and < 5 hours/day for other ages), long latency (> 30 minutes), low self-rated sleep quality, nocturnal awakenings (involuntary, in the middle of the night), and daytime sleepiness (difficulty concentrating). Independent variables included sociodemographic and behavioral characteristics. Adjusted analyses were performed with Poisson regression. Of the 1,865 students, 32% exhibited insufficient sleep on class days, 8.2% insufficient sleep on weekends, 18.6% long latency on class days, 17.2% long latency on weekends, 30% low self-rated sleep quality, 12.7% nocturnal awakenings, and 32.2% daytime sleepiness. Higher alcohol consumption was associated with insufficient sleep duration and long latency on class days, low quality sleep, awakenings, and daytime sleepiness. Smoking was associated with insufficient sleep duration on weekends, awakenings, and low-quality sleep. Black and brown skin color were associated with insufficient sleep duration on class days, low-quality sleep, and awakenings. Morning classes were associated with insufficient sleep and daytime sleepiness. Female gender was associated with low-quality sleep and awakenings. The most frequent sleep disorders were insufficient sleep on class days, low self-rated quality of sleep, and daytime sleepiness. Alcohol consumption and smoking and black and brown skin color were the principal factors associated with sleep disorders.

El objetivo fue investigar trastornos del sueño, factores sociodemográficos y de comportamiento asociados. Fue realizado un censo con los estudiantes universitarios. Las preguntas extraídas del Munich Chonotype Questionnaire investigaron: duración insuficiente del sueño (< 6 horas/día para < 65 años y < 5 horas/día para los demás), latencia prolongada (> 30 minutos), baja calidad autopercibida, vigilias (involuntarias, en medio de la noche) y somnolencia diurna (dificultad de concentración). Las variables independientes englobaron características sociodemográficas y de comportamiento. Se realizaron análisis ajustados con regresión de Poisson. De los 1.865 estudiantes, un 32% presentaron sueño insuficiente durante los días de clase, un 8,2% sueño insuficiente los fines de semana, un 18,6% latencia prolongada durante los días de clase, un 17,2% latencia prolongada durante los fines de semana, un 30% baja calidad autopercibida, un 12,7% vigilias y un 32,2% somnolencia diurna. El mayor consumo de alcohol se asoció a la duración insuficiente y latencia prolongada los días de clase, baja calidad de sueño, vigilias y somnolencia; el tabaquismo con duración insuficiente de sueño durante los fines de semana, vigilias y baja calidad de sueño, así como color de piel negro o mulato con una duración insuficiente de sueño durante los días de clase, baja calidad del mismo y vigilias. Tener clases por la mañana se asoció a sueño insuficiente durante los días de clase, somnolencia diurna, y el sexo femenino con somnolencia, baja calidad y vigilias. Los disturbios de sueño más frecuentes fueron sueño insuficiente durante los días de clase, baja calidad autopercibida y somnolencia diurna. El consumo de alcohol y cigarrillos, así como el color negro o mulato fueron los principales factores asociados a los disturbios.

RESUMO: Objetivos: Descrever a ocorrência simultânea de fatores de risco para doenças crônicas não transmissíveis e os fatores associados à simultaneidade dessas prevalências em adultos residentes na zona rural de um município no sul do Brasil. Métodos: Trata-se de estudo transversal com 1.445 adultos da zona rural de Pelotas, RS. Foram considerados quatro fatores de risco: tabagismo, consumo de álcool, inatividade física e consumo inadequado de legumes/verduras. Para verificar a ocorrência simultânea, utilizou-se análise de clusters. A associação foi avaliada por regressão ordinal, obtendo-se estimativas em razões de odds. Resultados: Dos quatro fatores de risco avaliados, três foram mais prevalentes entre os homens, sendo apenas inatividade física maior entre as mulheres. Na análise de clusters, consumo de álcool + tabagismo + consumo inadequado de vegetais foi a única combinação que apresentou prevalência observada significativamente maior que a esperada (O/E = 2,67; IC95% 1,30; 5,48), sendo superior a encontrada em outro estudo no sul do país, dado que pode ser justificado pois tal estudo incluiu o consumo de frutas além de ter avaliado população urbana, enquanto para este estudo avaliou-se apenas a população rural. Após ajuste, os homens, indivíduos solteiros, de cor da pele preta, parda ou outra, com baixa escolaridade, pior condição socioeconômica, pior percepção de saúde e que não desenvolviam atividades rurais apresentaram maior odds ratio de acúmulo de fatores de risco. Conclusão: Os achados evidenciam a importância do desenvolvimento de ações prioritárias em relação à saúde da população rural com atenção específica aos subgrupos de maior risco identificados.

ABSTRACT: Objectives: To describe the occurrence of simultaneous risk factors for chronic noncommunicable diseases, and factors associated with these prevalences in rural adults of a Southern Brazilian city. Methods: The design of this study was cross-sectional with a sample of 1,445 adults from the rural area of Pelotas, RS. Four risk factors were considered: smoking, alcohol consumption, physical inactivity and inadequate consumption of vegetables. To verify the simultaneous occurrence of the outcomes, a cluster analysis was used. The association was tested by ordinal regression resulting in odds ratios. Results: Among the four risk factors evaluated, three were the most prevalent among men, and only physical inactivity was greater among women. In the cluster analysis, only the combination of alcohol consumption + smoking + inadequate vegetable consumption presented an observed prevalence that was significantly higher than the expected (O/E = 2.67, 95%CI 1.30, 5.48), and higher than another study in the south of the country. This can be justified because that study included an evaluation of urban dwellers and the consumption of fruits. After adjustment, men, single individuals, non-white people, those with less schooling, those with a worse socioeconomic status, those who reported poor perception of health, and those who do not work in specifically rural activities had a greater probability of having the simultaneity of risk factors. Conclusion: The results show the importance of developing priority actions regarding the health of rural populations with special attention to the subgroups with an identified higher risk.

RESUMO: Objetivos: Descrever a ocorrência simultânea de fatores de risco para doenças crônicas não transmissíveis e os fatores associados à simultaneidade dessas prevalências em adultos residentes na zona rural de um município no sul do Brasil. Métodos: Trata-se de estudo transversal com 1.445 adultos da zona rural de Pelotas, RS. Foram considerados quatro fatores de risco: tabagismo, consumo de álcool, inatividade física e consumo inadequado de legumes/verduras. Para verificar a ocorrência simultânea, utilizou-se análise de clusters. A associação foi avaliada por regressão ordinal, obtendo-se estimativas em razões de odds. Resultados: Dos quatro fatores de risco avaliados, três foram mais prevalentes entre os homens, sendo apenas inatividade física maior entre as mulheres. Na análise de clusters, consumo de álcool + tabagismo + consumo inadequado de vegetais foi a única combinação que apresentou prevalência observada significativamente maior que a esperada (O/E = 2,67; IC95% 1,30; 5,48), sendo superior a encontrada em outro estudo no sul do país, dado que pode ser justificado pois tal estudo incluiu o consumo de frutas além de ter avaliado população urbana, enquanto para este estudo avaliou-se apenas a população rural. Após ajuste, os homens, indivíduos solteiros, de cor da pele preta, parda ou outra, com baixa escolaridade, pior condição socioeconômica, pior percepção de saúde e que não desenvolviam atividades rurais apresentaram maior odds ratio de acúmulo de fatores de risco. Conclusão: Os achados evidenciam a importância do desenvolvimento de ações prioritárias em relação à saúde da população rural com atenção específica aos subgrupos de maior risco identificados.

ABSTRACT: Objectives: To describe the occurrence of simultaneous risk factors for chronic noncommunicable diseases, and factors associated with these prevalences in rural adults of a Southern Brazilian city. Methods: The design of this study was cross-sectional with a sample of 1,445 adults from the rural area of Pelotas, RS. Four risk factors were considered: smoking, alcohol consumption, physical inactivity and inadequate consumption of vegetables. To verify the simultaneous occurrence of the outcomes, a cluster analysis was used. The association was tested by ordinal regression resulting in odds ratios. Results: Among the four risk factors evaluated, three were the most prevalent among men, and only physical inactivity was greater among women. In the cluster analysis, only the combination of alcohol consumption + smoking + inadequate vegetable consumption presented an observed prevalence that was significantly higher than the expected (O/E = 2.67, 95%CI 1.30, 5.48), and higher than another study in the south of the country. This can be justified because that study included an evaluation of urban dwellers and the consumption of fruits. After adjustment, men, single individuals, non-white people, those with less schooling, those with a worse socioeconomic status, those who reported poor perception of health, and those who do not work in specifically rural activities had a greater probability of having the simultaneity of risk factors. Conclusion: The results show the importance of developing priority actions regarding the health of rural populations with special attention to the subgroups with an identified higher risk.

RESUMO: Objetivo: Investigar o papel da situação de domicílio na prevalência de obesidade geral e abdominal, usando dados da Pesquisa Nacional de Saúde de 2013. Metodologia: As prevalências de obesidade geral e abdominal, em zonas rural e urbana, foram descritas de acordo com o sexo e a macrorregião do país. A associação entre situação de domicílio e obesidade foi testada por regressão de Poisson bruta e ajustada com nível de significância de 5%. Resultados: Foram incluídos 59.226 indivíduos. Destes, 20,7% apresentaram obesidade geral e 38% obesidade abdominal (maiores em mulheres: 24,3 e 52%, respectivamente). Em zonas urbanas, as maiores prevalências de obesidade geral foram observadas na Região Sul (20,8 e 26,5% para homens e mulheres, respectivamente). Em zonas rurais, na Região Centro-Oeste (17,2%) em homens e na Região Sul (27,4%) em mulheres. Após ajuste por idade e cor da pele, em homens, viver em zonas rurais foi associado à menor prevalência de obesidade geral nas regiões Norte (razão de prevalência - RP = 0,60; intervalo de confiança de 95% - IC95% 0,40 - 0,89) e Nordeste (RP = 0,47; IC95% 0,38 - 0,59) e para a obesidade abdominal em todas as regiões. Para as mulheres, na Região Centro-Oeste, viver em zona rural foi associado a maiores prevalências de obesidade abdominal (RP = 1,11; IC95% 1,01 - 1,23). Conclusão: Os resultados evidenciam o papel da situação de domicílio entre os desfechos em nível nacional, com menores prevalências em homens residentes em zonas rurais, no entanto maiores prevalências foram encontradas entre as mulheres, principalmente para obesidade abdominal.

ABSTRACT: Objective: To investigate the role of the domiciliary situation in the prevalence of general and abdominal obesity through the National Health Survey of 2013. Methodology: General obesity (body mass index ≥ 30 kg/m2) and abdominal obesity (waist circumference ≥ 102 cm in men and ≥ 88 cm in women) in rural and urban areas were described according to sex and macroregion. Crude and adjusted Poisson regression models were used to test the association between obesity and household situation, with the significance level of 5%. Results: The study included 59,226 individuals. Out of these, 20.7% presented general obesity and 38% abdominal obesity (higher in women: 24.3 and 52%, respectively). The highest prevalences of general obesity were observed in southern urban areas, for both sexes (20.8% in men and 26.5% in women). In rural areas, the highest prevalences were observed for the central-west region (17.2%) in men and in the south region (27.4%) in women. In males, after adjusting for demographic variables, living in rural areas was associated with lower prevalences of general obesity in the North (prevalence ratios - PR = 0.60; confidence interval of 95% - 95%CI 0.40 - 0.89) and Northeast (PR = 0.47, 95%CI 0,38 - 0.59), and for abdominal obesity in all regions. For women in the Midwest, the rural household situation was associated with lower prevalences of obesity. (PR = 1.11, 95%CI 1.01 - 1.23). Conclusions: The results evidenced the role of the domiciliary situation among outcomes at the national level, with lower prevalence of general and abdominal obesity in men living in rural areas. However, higher prevalences were found among women, especially for abdominal obesity.

RESUMO: Objetivo: Investigar o papel da situação de domicílio na prevalência de obesidade geral e abdominal, usando dados da Pesquisa Nacional de Saúde de 2013. Metodologia: As prevalências de obesidade geral e abdominal, em zonas rural e urbana, foram descritas de acordo com o sexo e a macrorregião do país. A associação entre situação de domicílio e obesidade foi testada por regressão de Poisson bruta e ajustada com nível de significância de 5%. Resultados: Foram incluídos 59.226 indivíduos. Destes, 20,7% apresentaram obesidade geral e 38% obesidade abdominal (maiores em mulheres: 24,3 e 52%, respectivamente). Em zonas urbanas, as maiores prevalências de obesidade geral foram observadas na Região Sul (20,8 e 26,5% para homens e mulheres, respectivamente). Em zonas rurais, na Região Centro-Oeste (17,2%) em homens e na Região Sul (27,4%) em mulheres. Após ajuste por idade e cor da pele, em homens, viver em zonas rurais foi associado à menor prevalência de obesidade geral nas regiões Norte (razão de prevalência - RP = 0,60; intervalo de confiança de 95% - IC95% 0,40 - 0,89) e Nordeste (RP = 0,47; IC95% 0,38 - 0,59) e para a obesidade abdominal em todas as regiões. Para as mulheres, na Região Centro-Oeste, viver em zona rural foi associado a maiores prevalências de obesidade abdominal (RP = 1,11; IC95% 1,01 - 1,23). Conclusão: Os resultados evidenciam o papel da situação de domicílio entre os desfechos em nível nacional, com menores prevalências em homens residentes em zonas rurais, no entanto maiores prevalências foram encontradas entre as mulheres, principalmente para obesidade abdominal.

ABSTRACT: Objective: To investigate the role of the domiciliary situation in the prevalence of general and abdominal obesity through the National Health Survey of 2013. Methodology: General obesity (body mass index ≥ 30 kg/m2) and abdominal obesity (waist circumference ≥ 102 cm in men and ≥ 88 cm in women) in rural and urban areas were described according to sex and macroregion. Crude and adjusted Poisson regression models were used to test the association between obesity and household situation, with the significance level of 5%. Results: The study included 59,226 individuals. Out of these, 20.7% presented general obesity and 38% abdominal obesity (higher in women: 24.3 and 52%, respectively). The highest prevalences of general obesity were observed in southern urban areas, for both sexes (20.8% in men and 26.5% in women). In rural areas, the highest prevalences were observed for the central-west region (17.2%) in men and in the south region (27.4%) in women. In males, after adjusting for demographic variables, living in rural areas was associated with lower prevalences of general obesity in the North (prevalence ratios - PR = 0.60; confidence interval of 95% - 95%CI 0.40 - 0.89) and Northeast (PR = 0.47, 95%CI 0,38 - 0.59), and for abdominal obesity in all regions. For women in the Midwest, the rural household situation was associated with lower prevalences of obesity. (PR = 1.11, 95%CI 1.01 - 1.23). Conclusions: The results evidenced the role of the domiciliary situation among outcomes at the national level, with lower prevalence of general and abdominal obesity in men living in rural areas. However, higher prevalences were found among women, especially for abdominal obesity.

RESUMO OBJETIVO Analisar a qualidade de vida e seus determinantes em uma população residente na zona rural. MÉTODOS Estudo transversal de base populacional com indivíduos de 18 anos ou mais, da zona rural de Pelotas, Sul do Brasil. A qualidade de vida foi avaliada pelo WHOQOL-BREF, composto por quatro domínios (físico, psicológico, relações sociais e meio ambiente), e duas perguntas: qualidade de vida global e satisfação com a saúde. Variáveis demográficas, socioeconômicas e de saúde foram consideradas entre as variáveis independentes. As associações foram avaliadas por regressão linear nos quatro domínios e por regressão logística ordinal nas duas perguntas gerais de qualidade de vida e satisfação com a saúde. RESULTADOS A amostra foi composta por 1.479 indivíduos. As prevalências de percepção de qualidade de vida global muito ruim e insatisfação com a saúde foram, respectivamente, 22,5% e 26,3%. Indivíduos mais velhos (p < 0,001), com cor da pele não branca (p = 0,004), com menor escolaridade (p < 0,001), mais pobres (p = 0,001) e que residiram a vida toda na zona rural (p = 0,049) apresentaram menor chance de ter melhor percepção de qualidade de vida global. Quanto à satisfação com a saúde, as mulheres (p = 0,001), os mais velhos (p = 0,001), os desempregados (p = 0,023) e aqueles portadores de doenças tiveram menor chance de relatarem maior satisfação com a saúde. Para os quatro domínios avaliados, os resultados foram consistentes com os observados para as perguntas gerais. CONCLUSÕES O fato de ser mulher, mais velho, não ser branco, ter baixa renda, ter menor escolaridade, residir a vida toda na zona rural, estar desempregado e portar alguma doença foram os aspectos mais relevantes para definir negativamente a qualidade de vida da população. Tendo em vista que são fatores significativamente importantes como determinantes da saúde, estes resultados sugerem que a qualidade de vida é um tema que deve ser colocado entre as necessidades de saúde, principalmente com relação aos grupos mais vulneráveis das áreas rurais.

ABSTRACT OBJECTIVE To analyze the quality of life and its determinants in a population living in a rural area. METHODS This is a population-based, cross-sectional study with individuals aged 18 years or over from the rural area of Pelotas, State of Rio Grande do Sul, Brazil. We evaluated quality of life using the WHOQOL-BREF, which has four domains (physical, psychological, social relations, and environment) and two questions: overall quality of life and satisfaction with health. We considered as independent variables the demographic, socioeconomic, and health variables. We evaluated the associations using linear regression in the four domains and ordinal logistic regression in the two general questions on quality of life and satisfaction with health. RESULTS The sample consisted of 1,479 individuals. The prevalence of the perception of overall very poor quality of life and dissatisfaction with health were 22.5% and 26.3%, respectively. Individuals who were older (p < 0.001), non-white (p = 0.004), with lower education level (p < 0.001), poorer (p = 0.001), and who had always lived in the rural area (p = 0.049) were less likely to have a better perception of overall quality of life. As for satisfaction with health, women (p = 0.001), older individuals (p = 0.001), those unemployed (p = 0.023), and those with diseases were less likely to report higher satisfaction with health. For the four domains evaluated, the results were consistent with those observed for the general questions. CONCLUSIONS The most relevant aspects that negatively defined the quality of life of the population were being a woman, older, non-white, having a low income, having a lower education level, having always lived in the rural area, being unemployed, and having a disease. Given that they are significant factors as determinants of health, these results suggest that quality of life is an issue that should be placed among health needs, especially regarding the most vulnerable groups in rural areas.

RESUMO OBJETIVO Avaliar a prevalência de obesidade geral, abdominal e concomitância de ambos os desfechos e seus determinantes em adultos residentes na zona rural. MÉTODOS Este estudo transversal de base populacional foi conduzido em município de médio porte da região Sul do Brasil. Três desfechos foram avaliados: obesidade geral (índice de massa corporal ≥ 30 kg/m 2 ), abdominal (circunferência da cintura ≥ 102 cm e ≥ 88 cm em homens e mulheres, respectivamente) e concomitância de ambas, classificada em: sem risco; apenas um fator de risco; e fatores agregados. Foram realizadas análises brutas e ajustadas por regressão de Poisson para cada desfecho de obesidade e regressão logística multinomial para o risco metabólico. Características demográficas e socioeconômicas foram consideradas como variáveis independentes. RESULTADOS Foram incluídos no estudo 1.433 indivíduos. Desses, 29,5% apresentaram obesidade geral e 37,8%, abdominal. A presença de um fator de risco foi observada em 15,8% da amostra, enquanto 25,8% apresentaram fatores agregados. O risco de obesidade geral, abdominal e a concomitância dos desfechos aumentaram significativamente com a idade, em ambos os sexos. Homens mais ricos apresentaram risco aumentado para obesidade geral (RP = 1,7; IC95% 1,0–2,9), abdominal (RP = 1,8; IC95% 1,1–2,9) e fatores agregados (RO = 1,9; IC95% 1,4–5,8). Ter 12 anos ou mais de estudo se mostrou fator de proteção para mulheres em relação à obesidade abdominal (RP=0,4; IC95% 0,2–0,8) e fatores agregados (RO = 0,2; IC95% 0,05–0,7). Realizar atividade rural reduziu o risco de obesidade geral (RP = 0,6; IC95% 0,5–0,8) e fatores agregados (RO = 0,5; IC95% 0,3–0,8) em mulheres, e de obesidade abdominal (RP = 0,6; IC95% 0,5–0,8) e presença de um fator de risco (RO = 0,5; IC95% 0,3–0,7), em homens. Cor da pele e tempo de vida residido na zona rural não foram estatisticamente associados aos desfechos estudados. CONCLUSÕES Altas prevalências de obesidade geral e abdominal foram observadas nessa população, condizentes com os valores encontrados em populações urbanas. Entretanto, a realização de atividades rurais mostrou-se um fator de proteção para os desfechos de obesidade.

ABSTRACT OBJECTIVE To evaluate the prevalence of general and abdominal obesity and the concomitant presence of both outcomes and their determinants among adults living in a rural area. METHODS This cross-sectional, population-based study was carried out in a medium-sized city in the southern region of Brazil. We evaluated three outcomes: general obesity (body mass index ≥ 30 kg/m 2 ), abdominal obesity (waist circumference ≥ 102 cm and ≥ 88 cm in men and women, respectively), and concomitant obesities, classified as: no risk, only one risk factor, and aggregate factors. We performed crude and adjusted Poisson regression analyses for each obesity outcome and multinomial logistic regression for metabolic risk. We considered demographic and socioeconomic characteristics as independent variables. RESULTS A total of 1,433 individuals were included in the study. Of them, 29.5% presented general obesity and 37.8% presented abdominal obesity. We observed the presence of a risk factor in 15.8% of the sample, while 25.8% presented aggregate factors. The risk of general and abdominal obesity and concomitant outcomes increased significantly with age in both sexes. Richer men were at increased risk for general obesity (PR = 1.7; 95%CI 1.0–2.9), abdominal obesity (PR = 1.8; 95%CI 1.1–2.9), and aggregate factors (OR = 1.9; 95%CI 1.4–5.8). An education level of twelve years or more was a protective factor for women in relation to abdominal obesity (PR = 0.4; 95%CI 0.2–0.8) and aggregate factors (OR = 0.2; 95%CI 0.05–0.7). Rural activity reduced the risk of general obesity (PR = 0.6; 95%CI 0.5–0.8) and aggregate factors (OR = 0.5; 95%CI 0.3–0.8) in women, and the risk of abdominal obesity (PR = 0.6; 95%CI 0.5–0.8) and presence of a risk factor (OR = 0.5; 95%CI 0.3–0.7) in men. Skin color and time lived in rural areas were not statistically associated with the outcomes studied. CONCLUSIONS We observed high prevalences of general and abdominal obesity in this population, which is consistent with the values found in urban populations. However, rural activities were a protective factor for obesity outcomes.