›› 2012, Vol. 32 ›› Issue (7): 827-.doi: 10.3969/j.issn.1674-8115.2012.07.002

• Monographic report (Investigations on tobacco use among adolescents in Shanghai) • Previous Articles     Next Articles

Reliability and validity of questionnaire on tobacco control among adolescents in Shanghai

CAI Yong1, QIAO Yun2, ZHU Jing-fen1, LI Na1, HE Ya-ping1, LU Lin1, MA Jin1   

  1. 1.School of Public Health, Shanghai Jiaotong University, Shanghai 200025, China；2.Pudong Institute for Health Development, Shanghai 201208, China
  • Online:2012-07-28 Published:2012-08-17
  • Supported by:

    Bill & Melinda Gates Foundation；Shanghai Education Committee Foundation, 12ZS106；Foundation of the Ministry of Education, 12YJC840001；Shanghai Jiaotong University Foundation, 2011-C；Emory University Foundation, 1362-SJTU-S2；Shanghai Municipal Health Bureau Foundation, 20114093；Shanghai Jiaotong University School of Medicine Foundation

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Abstract:

Objective To investigate the feasibility of the questionnaire on tobacco control among adolescents in Shanghai by evaluation of its validity and reliability. Methods Questionnaire survey on tobacco control among adolescents was conducted in 19 117 junior middle school students and senior high school students selected from 41 schools in 3 districts of Shanghai by cluster random sampling. The questionnaire included basic information of individuals, families and schools, condition of tobacco use, awareness of smoking hazard, inherent tendency of tobacco use, tobacco control educational environment of schools, external appeal of tobacco use, second-hand smoke exposure, tobacco exposure in families, tobacco use of peers and risk of media exposure to tobacco use. Validity and internal reliability were evaluated by statistical software. And the testretest reliability was evaluated by the data of 287 students selected from 6 of these schools. Results Most Cronbach´s alpha coefficients ranged from 0.504 to 0.804, and the tobacco exposure in families and tobacco use tendency in the future were the two scales with highest internal reliability. All the Spearman correlation coefficients were larger than 0.7, which reflected the favorable test-retest reliability. Ten factors explained 61.17% of the questionnaire structure found by factor analysis, and all factors could be regarded as predisposing factors, reinforcing factors and enabling factors. Conclusion The questionnaire can be applied among adolescents in Shanghai to assess tobacco control programs with good reliability and validity.

Key words: adolescents, tobacco control, reliability, validity