Resumen Introducción Un elevado tiempo de exposición de pantalla puede afectar tanto la calidad del sueño como las actividades diarias. Objetivo Analizar la asociación entre el tiempo de pantalla sedentario y la calidad del sueño, independientemente de los síntomas de ansiedad en adolescentes de ambos sexos. Método Estudio transversal que integra la investigación epidemiológica escolar con una muestra representativa (n = 666) de estudiantes (14 a 19 años) de escuelas públicas de Caruaru-PE. Las versiones traducidas al portugués del Índice de Calidad del Sueño de Pittsburgh (PSQI) y la Escala de Ansiedad y Depresión Hospitalaria (HAD) se aplicaron para analizar la calidad del sueño y la ansiedad. Se utilizó regresión logística binaria para analizar la asociación, considerando como resultado la calidad del sueño. Resultados Hubo una correlación positiva y estadísticamente significativa (p< .001) entre la calidad del sueño y los síntomas de ansiedad (r = .393). Una asociación significativa en cuanto a la asociación entre el tiempo de pantalla y la calidad del sueño se observó sólo en adolescentes clasificados como casos posibles o probables de ansiedad y sólo en la exposición al ordenador (OR = 2.337; IC 95% [1.01, 5.43]) y videojuegos (OR = 8.083; 95% IC [2.0, 32.8]) después de los ajustes. Discusión y conclusión Una mayor interacción con la pantalla y altos niveles de ansiedad pueden ser perjudiciales para el sueño. La exposición al tiempo de pantalla, específicamente aquellos con mayor interacción, como los videojuegos y las computadoras, puede afectar negativamente la calidad del sueño, pero sólo en adolescentes con mayor riesgo de ansiedad.

Abstract Introduction The increase in sedentary screen time can negatively affect the quality of sleep, impacting the performance of daily activities. Objective To analyze the association between sedentary screen time and sleep quality, regardless of the symptoms of anxiety in adolescents of both genders. Method Cross-sectional study integrating school-based epidemiological research with a representative sample (n = 666) of high school students (14 to 19 years old) in public schools in the municipality of Caruaru-PE. The translated versions into Portuguese of the Pittsburgh Sleep Quality Index (PSQI) and the Hospital Anxiety and Depression Scale (HAD) were applied to analyze sleep quality and anxiety, respectively. Binary logistic regression was used to analyze the association, considering sleep quality as an outcome. Results There was a positive, statistically significant (p< .001) correlation between sleep quality and symptoms of anxiety (r = .393). A significant association regarding the association between screen time and sleep quality was noted only in those adolescents classified as being possible or probable anxiety cases and only in exposure to the computer (OR = 2.337; 95% CI [1.01, 5.43]) and video games (OR = 8.083; 95% CI [2.0, 32.8]) after adjusting for gender, age, and school shift. Discussion and conclusion Increased interaction with the screen and higher levels of anxiety can be more harmful to sleep in adolescents. Exposure to screen time, specifically those which have a greater interaction such as video games and computers, can have a negative impact on sleep quality, but only in adolescents with a higher risk of anxiety.

RESUMO OBJETIVO: Verificar a adequação e os fatores associados ao cumprimento do esquema vacinal (BCG, DTP-Hib, SCR, VCP-10) em crianças internadas com pneumonia em um hospital de referência pediátrica no Nordeste do Brasil. MÉTODOS: Estudo transversal, descritivo com componente analítico, composto por 452 crianças hospitalizadas por pneumonia no Instituto de Medicina Integral Prof. Fernando Figueira, entre 2010 e 2013. Critérios de inclusão: idade de um mês a menores de cinco anos; com comprovação do cartão vacinal. Critérios de exclusão: pneumonia hospitalar ou doença de base concomitante. Avaliamos a adequação do esquema vacinal da BCG, tetravalente, tríplice viral e pneumocócica conjugada 10 valente (VPC-10). Foram utilizados os testes qui-quadrado e exato de Fisher seguidos de regressão multivariada de Poisson, estimando-se as razões de prevalência brutas, ajustadas e os respectivos intervalos de confiança de 95%. Participaram da análise multivariada as variáveis que na análise univariada apresentaram valor p < 0,20. RESULTADOS: Houve boa adequação no calendário vacinal, exceto a vacina VPC-10, que apresentou percentual inferior a 85%. Observou-se associação entre o adequado cumprimento do esquema vacinal e escolaridade materna (89,9% ensino médio completo), sexo da criança (87,2% feminino), idade da criança (94,2% menor que seis meses) e aleitamento materno (84,3% amamentaram). CONCLUSÕES: Pela elevada taxa na escolaridade materna e pelo elevado percentual de alimentação por leite materno, pode-se entender que há uma melhor compreensão no cuidado da saúde da criança pelas genitoras estudadas nesta pesquisa, apresentando a eficácia das políticas públicas de alimentação infantil. Porém, as crianças não tiveram uma boa adequação do esquema vacinal da VPC-10, uma das principais vacinas contra a pneumonia, podendo ser esse um dos principais fatores nas causas do internamento, não apresentando influência com a classificação da gravidade da doença. Enfatiza-se dessa maneira que as causas de morbidade por pneumonia não são associadas a um único fator.

ABSTRACT OBJECTIVE: To verify the adequacy and factors associated with compliance with the immunization schedule (BCG, DTP-Hib, MMR, PCV-10) in children hospitalized with pneumonia at a pediatric referral hospital in Northeast Brazil. METHODS: This is a cross-sectional, descriptive study with an analytical component, with a sample of 452 children hospitalized with pneumonia at the Instituto de Medicina Integral Prof. Fernando Figueira, between 2010 and 2013. The inclusion criterion was children aged from one month to less than five years of age with proof in the immunization record. The exclusion criterion was the presence of hospital-acquired pneumonia or concomitant disease. We have evaluated the adequacy of the immunization schedule for the BCG, tetravalent, MMR, and 10-valent pneumococcal conjugate (PCV-10) vaccines. We used the chi-square test and Fisher's exact test followed by multivariate Poisson regression, estimating the crude and adjusted prevalence ratios and respective 95% confidence intervals. The variables with p < 0.20 in the univariate analysis were included in the multivariate analysis. RESULTS: There was good adequacy in the immunization schedule, except for PCV-10, which presented a percentage lower than 85%. We have observed an association between adequate compliance with the immunization schedule and education level of the mother (89.9% complete high school), sex of the child (87.2% female), age of the child (94.2% younger than six months), and breastfeeding (84.3% breastfed). CONCLUSIONS: Given the high rate of education level of the mother and the high percentage of breastfeeding, we can understand that there is a better understanding of the health of the child by the mothers studied in this study, showing the effectiveness of public policies for infant feeding. However, children did not have good adequacy of the immunization schedule of PCV-10, one of the main vaccines against pneumonia, which can be one of the main factors in the causes of hospitalization, with no influence on the classification of the severity of the disease. In this way, we emphasize that the causes of pneumonia morbidity are not associated with a single factor.