title: Psychometric properties of the persian version of the youth risk behavior survey questionnaire.
abstract: BACKGROUND
  Adolescents may get involved in high-risk behaviors. Surveys are the primary, and sometimes the sole source of data collection for many high-risk health behaviours. We examined the reliability and validity of the psychometric properties of the self-administered Persian version of the 2009 Youth Risk Behavior Surveillance System (YRBSS) questionnaire.
  
  
  METHODS
  In a methodological study in summer 2010, 100 Iranian adolescents aged 15-18 years were recruited through convenience sampling. The face and content validity were used for the questionnaire validity. In order to evaluate the questionnaire's reliability, the Intraclass Correlation Coefficient (ICC) and Cronbach's α were calculated for domains and 89 items.
  
  
  RESULTS
  Among 89 items, the ICC values were below 0.4 (weak reliability) for 2 items (2.25%), 0.4-0.6 (moderate reliability) for 10 items (11.24%), 0.6-0.8 (good reliability) for 32 items (35.96%) and 0.8-1 (excellent reliability) for 45 items (50.56%). The prevalence of most high-risk behaviors was constant in the first and second survey. The value of Cronbach's α was 0.73 for intentional and unintentional injuries, 0.77 for tobacco use, 0.86 for alcohol and other drug use, and 0.79 for unsafe sexual behaviors. No domain had a mean ICC of below 0.6. Furthermore, 97.75% of the items had moderate to excellent reliability. Thus, the Persian YRBSS questionnaire had an acceptable reliability.
  
  
  CONCLUSIONS
  Over the 2-week period, sexual behaviors were reported with less consistency compared to other behaviors. In any case, researchers must be aware of the limitation of the data collected through this questionnaire, particularly in comparison to the domain of sexual behaviors. Overall, 97.75% of the items had moderate to excellent reliability. Thus, the Persian YRBSS questionnaire had an acceptable reliability.
authors.affiliation: Department of Reproductive Health, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Baheiraei
authors.forename: Z
authors.initials: Z
authors.lastname: Hamzehgardeshi
authors.forename: M R
authors.initials: MR
authors.lastname: Mohammadi
authors.forename: S
authors.initials: S
authors.lastname: Nedjat
authors.forename: E
authors.initials: E
authors.lastname: Mohammadi