Self-reported smoking among adolescents: How accurate is it with the urine cotinine strip test?

International Journal of Pediatrics and Adolescent Medicine

Norfazilah Ahmad¹  Azmawati Mohammed Nawi²  Mohd Rohaizat Hassan³  Norfazillah Ab Manan³ 

[1] Dept. of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia;Corresponding author. Dept. of Community Health, Faculty of Medicine, Jln Yaacob Latiff, Bdr Tun Razak, Cheras, 56000, Cheras, Kuala Lumpur, Malaysia.;Dept. of Community Health, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia;

关键词: Self-reported smoking;    Urine cotinine;    Accuracy;    Adolescent;    Discrepancy;    Validation;   

DOI  :  

来源: DOAJ

【 摘 要 】

Background & Objective: In the local setting, the prevalence of smoking among adolescents varies, as it is based only on self-reporting without biomarker validation. The objective of the present study was to determine the accuracy of self-reported smoking among adolescents as compared to that of the urine cotinine strip test. Methods: We performed a cross-sectional study of 314 adolescents aged 16 years from February 2015 to April 2015 in Putrajaya, Malaysia. The accuracy of self-reporting was assessed using a data collection sheet and was validated by the urine cotinine strip test. Three schools were chosen by the simple random method, where all Form 4 students constituted the sample unit. The kappa statistic was used for determining agreement between self-reporting and urine cotinine strip testing. Results: There was a substantial agreement between self-reporting and the urine cotinine strip test (kappa = 0.757, 95% confidence interval [CI]: 0.63, 0.88); there was 95.86% overall agreement. The prevalence of self-reported smoking was 8% (95% CI: 7.47, 8.53) and that of urine cotinine strip testing was 10.8% (95% CI: 10.20, 11.41). There was a discrepancy with the results of the urine cotinine strip test in 8% of self-reported smokers and 3.8% of self-reported nonsmokers. Self-reporting had 67.6% sensitivity and 99.3% specificity as compared to those of urine cotinine strip testing and had 92% positive predictive value and 96.2% negative predictive value. Conclusion: Self-reporting can be used to assess smoking status but should be used with care among adolescents. Urine cotinine strip test validation of self-reporting enables the measurement of the true prevalence of smoking among adolescents.

【 授权许可】

Unknown