title: [Prevalence of excessive screen time and associated factors in adolescents].
abstract: OBJECTIVE
  To determine the prevalence of excessive screen time and to analyze associated factors among adolescents.
  
  
  METHODS
  This was a cross-sectional school-based epidemiological study with 2,874 high school adolescents with age 14-19 years (57.8% female) from public and private schools in the city of João Pessoa, PB, Northeast Brazil. Excessive screen time was defined as watching television and playing video games or using the computer for more than two hours per day. The associated factors analyzed were: sociodemographic (gender, age, economic class, and skin color), physical activity and nutritional status of adolescents.
  
  
  RESULTS
  The prevalence of excessive screen time was 79.5% (95%CI: 78.1-81.1) and it was higher in males (84.3%) compared to females (76.1%; p<0,001). In multivariate analysis, adolescent males, aged 14-15 years old, of higher economic classes had higher chances of exposure to excessive screen time. The level of physical activity and nutritional status of adolescents were not associated with excessive screen time.
  
  
  CONCLUSIONS
  The prevalence of excessive screen time was high and varied according to sociodemographic characteristics of adolescents. It is necessary to develop interventions to reduce the excessive screen time among adolescents, particularly in subgroups with higher exposure.
authors: Programa Associado de Pós-graduação em Educação Física, Universidade Federal da Paraíba (UPE/UFPB), João Pessoa, PB, Brasil; Grupo de Estudos e Pesquisas em Epidemiologia da Atividade Física - GEPEAF, João Pessoa, PB, Brasil.
authors: Joana Marcela Sales
authors: JM
authors: de Lucena
authors: Programa Associado de Pós-graduação em Educação Física, Universidade Federal da Paraíba (UPE/UFPB), João Pessoa, PB, Brasil; Grupo de Estudos e Pesquisas em Epidemiologia da Atividade Física - GEPEAF, João Pessoa, PB, Brasil.
authors: Luanna Alexandra
authors: LA
authors: Cheng
authors: Centro de Ciências da Saúde, Universidade Federal da Paraíba (UFPB), João Pessoa, PB, Brasil; Grupo de Estudos e Pesquisas em Epidemiologia da Atividade Física - GEPEAF, João Pessoa, PB, Brasil.
authors: Thaísa Leite Mafaldo
authors: TL
authors: Cavalcante
authors: Centro de Ciências da Saúde, Universidade Federal da Paraíba (UFPB), João Pessoa, PB, Brasil; Grupo de Estudos e Pesquisas em Epidemiologia da Atividade Física - GEPEAF, João Pessoa, PB, Brasil.
authors: Vanessa Araújo
authors: VA
authors: da Silva
authors: Programa Associado de Pós-graduação em Educação Física, Universidade Federal da Paraíba (UPE/UFPB), João Pessoa, PB, Brasil; Centro de Ciências da Saúde, Universidade Federal da Paraíba (UFPB), João Pessoa, PB, Brasil; Grupo de Estudos e Pesquisas em Epidemiologia da Atividade Física - GEPEAF, João Pessoa, PB, Brasil. Electronic address: jcazuzajr@hotmail.com.
authors: José Cazuza
authors: JC
authors: de Farias Júnior
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D003201:Computers / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012737:Sex Factors; D012880:Skin Pigmentation; D012959:Socioeconomic Factors; D013690:Television / Q000706:statistics & numerical data*; D013997:Time Factors; D018910:Video Games / Q000706:statistics & numerical data*; D055815:Young Adult
keywords: Atividade motora; Comportamento sedentário; Motor activity; Obesidade; Obesity; Sedentary behavior