title: Factors contributing to regular smoking in adolescents in Turkey.
abstract: OBJECTIVE
  The objectives of this study were to determine the levels of lifetime cigarette use, daily use, and current use among young people (aged 15-19 years) and to examine the risk factors contributing to regular smoking.
  
  
  METHODS
  The number of students was determined proportionately to the numbers of students in all the high schools in the province of Trabzon in Turkey. The data were gathered using the questionnaire method. A total of 4666 students participated in the study. The chi-square test and logistic regression analysis were used in data analysis.
  
  
  RESULTS
  Of the 4666 students who took part in the study, the level of lifetime cigarette use was 38.2% (n = 1796), that of lifetime daily cigarette use was 10.5% (n = 491), and that of current cigarette use was 9.5% (n = 447). Male students (P < .0005), those whose mothers were smokers (P < .0005), those whose fathers smoked (P = .005), those whose siblings smoked (P<.0005), those whose friends smoked (P < .0005), those whose teachers smoked (P = .001), and low achievers in school (P < .0005) stated that they significantly smoked on a more regular basis. According to the results of the logistic regression analysis, the following risk factors were statistically significant: male students smoked 3.02 times (95% CI 2.20-4.16) more than females, those whose mothers were smokers smoked 1.57 times (95% CI 1.09-2.28) more than those whose mothers were not, those whose friends were smokers smoked 2.42 times (95% CI 1.73-3.39) more than those whose friends were non-smokers, poor achievers in school smoked 2.62 times (95% CI 1.97-3.49) more than high achievers, and those without poor grades smoked 1.75 times more (95% CI 1.23-2.40), the risk rising 1.06 times (95% CI 1.01-1.11) with earlier age at first experimentation. The risk of daily cigarette use was observed to decline by 0.91 times (95% CI 0.84-0.98) with increasing numbers of siblings.
  
  
  CONCLUSIONS
  Effective smoking prevention programs should take into account the dominant influence of peer groups in the onset and continuation of smoking.
authors.affiliation: Department of Public Health, Kardeniz Technical University, 61080 Trabzon, Turkey. gcanktu@yahoo.com
authors.forename: Gamze
authors.initials: G
authors.lastname: Can
authors.forename: Murat
authors.initials: M
authors.lastname: Topbas
authors.forename: Funda
authors.initials: F
authors.lastname: Oztuna
authors.forename: Sukru
authors.initials: S
authors.lastname: Ozgun
authors.forename: Emine
authors.initials: E
authors.lastname: Can
authors.forename: Asuman
authors.initials: A
authors.lastname: Yavuzyilmaz
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D000367:Age Factors; D004522:Educational Status; D005191:Family Characteristics; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D010379:Peer Group; D012307:Risk Factors; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology / Q000523:psychology*; D012931:Social Environment; D014421:Turkey / Q000453:epidemiology; D055815:Young Adult