• Parisa Ghelichkhani, Masoud Baikpour, Kazem Mohammad, Rahim FattahFattah HamaFHCommunity Medicine, College of Medicine, University of Sulaimani, Sulaimani, Iraq., Nazila Rezaei, Naser Ahmadi, Simin Darvish Noori Kalaki, Mohammed I M Gubari, Ali Rafei, Jalil Koohpayehzadeh, Mohammad Mehdi Gouya, Mahmoud Yousefifard, Michael E Jones, and Mostafa Hosseini.
• Department of Intensive Care Nursing, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran.
• Arch Iran Med. 2021 Jan 1; 24 (1): 7-14.

BackgroundCurrent and daily smoking prevalence rates have been have investigated in several cross-sectional studies. However, analyses in terms of age-period-cohort (APC) have not been carried out. We assessed daily smoking dynamics over a 25-year period using the APC model.MethodsIn our analyses, we used data from 214,652 people aged 15 to 64 years, collected by national health surveys conducted in 1990-1991, 1999, 2005, 2007, 2011 and 2016. The Intrinsic Estimator model was used to analyze the impact of APC on daily smoking prevalence.ResultsMales were found to exhibit a higher prevalence of smoking compared to females (26.0% against 2.7%). Prevalence of smoking increased by age, peaking at the age groups of 40-44 in men and 45-49 in women, followed by a decreasing trend. The 1990 period had the highest prevalence in both genders, and the 2016 period had the lowest. The coefficients of birth cohort effects showed different patter19s of fluctuations in the two genders with the maximum and minimum coefficients for men calculated in the 1966-1970 and 1991-95 birth cohorts, and for females the 1931-1935 and 1971-1975 birth cohorts, respectively.ConclusionWe showed the impact of APC on daily tobacco smoking prevalence, and these factors should be considered when dealing with smoking.© 2021 The Author(s). This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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