Resumo Objetivo: Determinar a associação entre número de parceiros sexuais e consumo de bebida alcoólica em adolescentes e jovens escolares. Métodos: A amostra foi composta por estudantes da rede estadual entre 12 e 24 anos, que responderam a versão brasileira do questionário Youth Risk Behavior Survey. A análise foi feita por modelo de regressão logística multinomial. Resultados: Foram analisados 1.275 estudantes. Para o sexo feminino ter entre dois a cinco parceiros esteve associado com idade ≥ 15 anos (OR 14,58) e escolaridade materna com ensino médio incompleto ou inferior (OR 3,37). Não fazer uso de bebida alcoólica diminuiu em 96% as chances de ter maior número de parceiros. Para o sexo masculino as variáveis associadas foram: idade ≥ 15 anos (OR 18,15); ausência de religião (OR 3,55); idade da primeira dose ≤ 14 anos (OR 3,48). O envolvimento em bebedeira demonstrou mais chances de ter maior número de parceiros sexuais. Conclusão: Independentemente do número de parceiros, a bebedeira e a idade de iniciação alcoólica são fatores de risco para comportamento sexual vulnerável.

Abstract Objective: To determine the association between the number of sexual partners and alcohol consumption in adolescents and young schoolchildren. Methods: The sample consisted of students from public schools aged 12-24 years who answered the Brazilian version of the Youth Risk Behavior Survey questionnaire. The analysis was performed by multinomial logistic regression model. Results: 1275 students were analyzed. For females, having two to five partners was associated with age ≥15 years (OR 14.58) and maternal education up to incomplete high school or lower educational level (OR 3.37). No consumption of alcohol decreased the chances of having more partners by 96%. For males, the associated variables were: age ≥15 years (OR 18.15); having no religion (OR 3.55); age at first dose ≤14 years (OR 3.48). Binge drinking increases the chances of having a higher number of sexual partners. Conclusion: Regardless of the number of partners, binge drinking and age of alcohol consumption onset are risk factors for vulnerable sexual behavior.

Resumo Objetivo: Avaliar a confiabilidade e validade da versão brasileira do Índice de Qualidade do Sono de Pittsburgh. Métodos: Uma amostra de 309 adolescentes, subdivididos em uma de 209 indivíduos, dos quais 25 foram reavaliados, e outra de 100 adolescentes. A confiabilidade foi avaliada por meio dos valores de α de Cronbach, coeficiente de correlação intraclasse, erro padrão da medida, mínima mudança detectável e plotado gráfico Bland-Altman. A análise exploratória dos componentes do questionário foi feita com base na amostra de 209 adolescentes. A análise fatorial confirmatória foi feita com a amostra de 100 indivíduos. Resultados: A amostra de 209 participantes teve uma média de 14,38 (± 1,94) anos, 80 (38,3%) meninas e 129 (61,7%) meninos. A amostra composta por 100 adolescentes teve uma média de 13,66 (± 2,35) anos, 51 (51%) meninas e 49 (49%) meninos. O questionário obteve erro padrão da medida = 1,12 e mudança mínima detectável = 3,10. O α de Cronbach foi de 0,71 e coeficiente de correlação intraclasse de 0,65 (IC95% 0,21-0,85). As análises fatoriais apontaram como melhor modelo de componentes aquele composto por dois fatores, com exclusão do componente sobre uso de medicamentos para dormir. Conclusão: O questionário obteve elevada consistência interna e confiabilidade moderada. Além disso, um modelo de dois fatores parece ser o mais adequado para avaliar a qualidade do sono em adolescentes.

Abstract Objective: To evaluate the reliability and validity of the Brazilian version of the Pittsburgh Sleep Quality Index. Methods: 309 adolescents, subdivided into a sample of 209 subjects, of whom 25 were reassessed, and another sample of 100 adolescents. Reliability was assessed using Cronbach's α-values, intraclass correlation coefficient, Standard Error of Measure, Minimum Detectable Change, and Bland-Altman plotting. Exploratory analysis of the questionnaire components was performed based on the sample of 209 adolescents. Confirmatory factor analysis was performed with a sample of 100 individuals. Results: The sample of 209 participants had a mean age of 14.38 (±1.94) years, comprising 80 (38.3%) girls and 129 (61.7%) boys. The sample of 100 adolescents had a mean age of 13.66 (±2.35) years, comprising 51 (51%) girls and 49 (49%) boys. The questionnaire obtained a Standard Error of Measure = 1.12 and Minimum Detectable Change = 3.10. Cronbach's α was 0.71 and the Intraclass Correlation Coefficient was 0.65 (95% CI: 0.21-0.85). The factor analysis showed that the best model of components was the one that consisted of two factors, excluding the component on the use of sleep medications. Conclusion: The questionnaire showed high internal consistency and moderate reliability. Furthermore, a model with two factors seems to be the most appropriate to evaluate the quality of sleep in adolescents.

Objective: To evaluate the effectiveness of low-frequency TENS (LFT) and high-frequency TENS (HFT) in post-episiotomy pain relief. Method: A randomized, controlled, double-blind clinical trial with placebo composed of 33 puerperae with post-episiotomy pain. TENS was applied for 30 minutes to groups: HFT(100 Hz; 100 µs), LFT (5 Hz; 100 µs), and placebo (PT). Four electrodes were placed in parallel near the episiotomy and four pain evaluations were performed with the numeric rating scale. The first and the second evaluation took place before TENS application and immediately after its removal and were done in the resting position and in the activities of sitting and ambulating. The third and fourth evaluation took place 30 and 60 minutes after TENS removal, only in the resting position. Intragroup differences were verified using the Friedman and Wilcoxon tests, and the intergroup analysis employed the Kruskal-Wallis test. Results: In the intragroup analysis, there was no significant difference in the PT during rest, sitting, and ambulation (P>0.05). In the HFT and LFT, a significant difference was observed in all activities (P<0.001). In the intergroup analysis, there was a significant difference in the resting position in the HFT and LFT (P<0.001). In the sitting activity, a significant difference was verified in the second evaluation in the HFT and LFT (P<0.008). No significant difference was verified among the groups in ambulation (P<0.20). Conclusions: LFT and HFT are an effective resource that may be included in the routine of maternity wards.