TY - JOUR ID - 242693 TI - Application of Mixture Cure with the Doubly Censoring Model in Estimation of Initiation Age and Prevalence of Water-Pipe Smoking in Iran: a New Approach in Population-Based Studies JO - TANAFFOS (Respiration) JA - RSPR LA - en SN - 1735-0344 AU - Teimourpour, Amir AU - Yaseri, Mehdi AU - Parsaeian, Mahbubeh AU - Bagherpour Kalo, Mehrdad AU - Hosseini, Mostafa AD - Department of Epidemiology and Biostatistics, School of Public health, Tehran University of Medical Sciences, Tehran, Iran. AD - Department of Epidemiology and Biostatistics, School of Public health, Tehran University of Medical Sciences, Tehran, Iran Y1 - 2020 PY - 2020 VL - 19 IS - 3 SP - 243 EP - 249 KW - Smoking Water Pipe KW - Initiation Age KW - Prevalence KW - Parametric Survival Mixture Cure Model with Doubly Censoring KW - STEPs DO - N2 - Background: The initiation age and prevalence of smoking water-pipe are two important parameters for establishing preventive policies. Thus, the present study was conducted to introduce a new approach for estimating and evaluating the effect of demographic variables on the initiation age and prevalence of smoking water-pipe. Materials and Methods: The STEPwise approach for non-communicable disease risk factors surveillance (STEPS) 2011 data were used and daily smokers and non-smokers with the age range of 16 to 70 years were included in the study. A survival mixture cure rate model with doubly censoring was used. Results: Totally, 9764 individuals were enrolled in the study. No significant association was observed between the initiation age and gender (HR=1.07, 95% CI: 0.76, 1.58), whereas there was a significant difference between initiation age and area of residence (HR=0.62, 95% CI: 0.44, 0.88). The mean age of starting smoking was 25.82 years (95% CI: 24.13, 27.63). The odds of smoking in men were higher than in women (OR=2.34, 95% CI: 1.79, 3.7). The prevalence of smoking had a significant association with socioeconomic status (OR=0.84, 95% CI: 0.72, 0.97), but no association with the level of education (OR=1.06, 95% CI: 0.97, 1.15) and place of residence (OR=1.2, 95% CI: 0.93, 1.57) was found. The estimated prevalence of smoking water-pipe in total, men, and women was 4.8% (95% CI: 4.19%, 5.51%), 7.77% (95% CI: 6.76%, 8.86%), and 3.47% (95% CI: 2.8%, 4.25%). Conclusion: A new statistical methodology was applied to estimate and evaluate the effect of demographic variables on the initiation age and prevalence of water-pipe smoking. UR - https://www.tanaffosjournal.ir/article_242693.html L1 - https://www.tanaffosjournal.ir/article_242693_d765e24f18db6b87364a61a84dd0bde3.pdf ER -