Objective:This study aimed to investigate the prevalence and factors associated with short sleep duration in adolescents from Maravilha – Santa Catarina (SC), southern Brazil.Methods:The sample consisted of 516 adolescents aged 10–19 years of both genders. Issues associated with short sleep duration and difficulty falling asleep, chronotype, daytime sleepiness, physical activity, sedentary behavior and weight status were investigated.Results:The prevalence of short sleep duration (<8h on school days) was 53.6%. Adolescents aged 17–19 years showed a 2.05-fold (95%CI: 1.20–3.50) greater prevalence of short sleep duration than those aged 10–12 years. The ones studying in morning and evening shifts had a higher prevalence of short sleep duration compared to those in the afternoon shift. Older age and school shift were the main factors associated with short sleep duration.Conclusions:Adolescents from Maravilha showed high prevalence of short sleep duration, and older adolescents that studied in the morning and evening shifts showed reduced sleep.

Adolescents from Maravilha showed high prevalence of short sleep duration, and older adolescents that studied in the morning and evening shifts showed reduced sleep.

The objective of the present study was to propose cutoff points for the Pediatric Daytime Sleepiness Scale (PDSS) through sensitivity and specificity analyses in order to identify excessive daytime sleepiness, considering parameters such as duration and quality of sleep, health perception, stress control and depressive moods (feelings of sadness) in adolescents. A total of 1,132 adolescents, aged 14-19 years old, of both sexes, from the public high school of São José - SC, answered the questionnaire with information on age, daytime sleepiness, sleep duration, health perception, stress management, depressive moods (feelings of sadness) and quality of sleep. The Receiver Operating Characteristic (ROC) curve was used to estimate cutoff points considering the sensitivity and specificity values ​​that best identify adolescents with excessive daytime sleepiness, using independent variables as a reference. The majority of the sample was female (54.2%), aged 14-16 years. The girls presented worse quality of sleep (66.4%), and the boys had a more positive perception of health (74.8%), better stress control (64.8%) and lower depressive moods (feelings of sadness) (63.3%). The largest area in the ROC curve was the one that considered sleep quality as a parameter in both sexes (area of the curve = 0.709 and 0.659, respectively, for boys and girls, p < 0.001). Considering sleep quality as a reference, the cutoff point for excessive daytime sleepiness was 15 points. The other parameters used were also significant (p < 0.005). Poor sleep quality was the parameter most strongly related to daytime sleepiness, and a cutoff of 15 points for the PDSS for both sexes should be used in the definition of excessive daytime sleepiness. For the other parameters, stress management, depressive mood (feelings of sadness) and health perception, different cutoff points are suggested for boys and girls.

Objetivo Determinar a especificidade e a sensibilidade de uma medida para apontar o melhor ponto de corte para a duração de sono como preditor da sonolência diurna excessiva em adolescentes. Métodos Participaram do estudo 1.359 adolescentes, com idades de 14 a 21 anos, de duas cidades do sul do Brasil, que responderam a questionário de hábitos de sono e sonolência diurna. Utilizou-se a Receiver Operating Characteristic para estimar a capacidade preditiva da duração de sono para a sonolência diurna excessiva. Resultados A média de duração do sono para os adolescentes com sonolência diurna excessiva foi de 7,9 horas e para aqueles sem sonolência diurna excessiva foi de 8,33 horas (p < 0,001). A prevalência de sonolência diurna excessiva foi de 35,7%. Foi observada correlação significativa e negativa entre a duração do sono e as idades analisadas (p < 0,001). A análise de Receiver Operating Characteristic indicou duração mínima de 8,33 horas como proteção para a sonolência diurna excessiva. Conclusão Foi observada alta prevalência de sonolência diurna excessiva e propõe-se como possível duração de sono um mínimo de 8,33 horas nos dias com aula para que os adolescentes evitem esse desfecho.

contriBuiÇões dos Autores: Todos os autores contribuíram individualmente e de forma significante para a realização do manuscrito. EPGF (0000-0002-6924-122X)*, RDA (0000-0003-0338-230X)*, DGB (0000-0002-5543-5445)* e CM (0000-0002-7317-738X)*, foram os principais contribuintes na redação do manuscrito. DF (0000-0002-7043-2015)* realizou a coleta de dados, organizou e tabulou os dados. AP (0000-0001-8862-9636)* e EPGF avaliaram os dados da análise estatística. EPGF, DF, DGB, RDA, CM, AP e TSB (0000-0003-2016-9287)*, realizaram a pesquisa bibliográfica, a revisão do manuscrito, discussão dos resultados e contribuíram com o conceito intelectual do estudo. Todos os autores contribuíram com o conceito intelectual e revisaram o artigo antes da submissão. *Número ORCID (open researcher and contributor id).