title: Factors associated with injuries in adolescents, from the National Adolescent School-based Health Survey (PeNSE 2012).
abstract: OBJECTIVE
  To estimate the prevalence of injuries among teenagers and to examine the associated risk factors, such as sociodemographic characteristics, risk behaviors, family ties and other factors.
  
  
  METHODS
  The prevalence of the outcome (injury) was estimated with a 95%confidence interval. In order to verify factors associated with the injury, a bivariate analysis was made with estimated odds ratio (OR) and its respective confidence intervals. Then, a multivariate analysis was carried out, only with variables whose descriptive level was equal to or lower than 5% (p < 0.05) remaining in the model.
  
  
  RESULTS
  The study of injury in adolescents, based on the data from the National Adolescent School-based Health Survey (PeNSE), pointed out that 10.3% of the teenagers suffered severe injuries in the past 12 months, such as cuts or perforations, broken bones or dislocated joints. The following variables remained independently associated with "suffering severe injuries": being a male teenager; black, mulatto or indigenous race/color and working. Factors related to family ties are significant when the relations are fragile amongst members: adolescents that are injured the most are the ones who suffer most aggressions at home, who skip classes without notifying their parents, those who do not live with their parents and have low family control. The most relevant aspects of mental health are insomnia and loneliness. The factors associated to the exposure to situations of violence that remained in the model were: insecurity in school and in the route home-school; getting a ride with someone inebriated; drinking and driving motorized vehicles; not wearing the seatbelt; not wearing a helmet and being bullied. Among the factors of individual behavior, the following can be emphasized: use of alcohol, cigarettes, trying illicit drugs and early sexual intercourse.
  
  
  CONCLUSIONS
  The analysis of the determinants for suffering injuries in childhood and adolescence shows the complex relationship between associated factors, which points to the need for action towards several aspects to reduce social inequalities, strengthen family ties and prevent violent contexts and individual risk factors.
authors: Department of Non-Communicable Diseases Surveillance and Health Promotion, Ministry of Health, Brasília, DF, Brazil.
authors: Deborah Carvalho
authors: DC
authors: Malta
authors: Department of Non-Communicable Diseases Surveillance and Health Promotion, Ministry of Health, Brasília, DF, Brazil.
authors: Rogério Ruscitto
authors: RR
authors: do Prado
authors: Department of Non-Communicable Diseases Surveillance and Health Promotion, Ministry of Health, Brasília, DF, Brazil.
authors: Silvania Suely Andrade
authors: SS
authors: Caribe
authors: Department of Non-Communicable Diseases Surveillance and Health Promotion, Ministry of Health, Brasília, DF, Brazil.
authors: Marta Maria Alves
authors: MM
authors: da Silva
authors: Brazilian Institute of Geography and Statistics, Rio de Janeiro, RJ, Brazil.
authors: Marco Antonio Ratzsch
authors: MA
authors: de Andreazzi
authors: Ministry of Health, Brasília, DF, Brazil.
authors: Jarbas Barbosa
authors: JB
authors: da Silva Júnior
authors: Center of Violence and Health Studies, National School of Public Health, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.
authors: Maria Cecilia de Souza
authors: MC
authors: Minayo
mesh_terms: D000293:Adolescent; D001938:Brazil / Q000453:epidemiology; D002648:Child; D005191:Family Characteristics; D005195:Family Relations; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D015995:Prevalence; D012307:Risk Factors; D012309:Risk-Taking; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014947:Wounds and Injuries / Q000453:epidemiology*