Mean estimates of smoking subpopulations, Iran, 2007
| 15–24 | 25–34 | 35–44 | 45–54 | 55–64 | Male | Female | Rural | Urban | Total | |
| Age when starting to smoke* | 17.2 (16.3 to 18) | 19.6 (18.9 to 20.3) | 21.7 (19.8 to 23.6) | 22 (20.5 to 23.5) | 23.5 (21.7 to 25.3) | 20.4 (19.7 to 21.0) | 24.2 (21.8 to 26.7) | 20.1 (18.3 to 21.9) | 20.7 (20.1 to 21.3) | 20.5 (19.9 to 21.2) |
| Number of cigarettes smoked per day† | 13.1 (6.1 to 20.1) | 11.8 (10 to 13.5) | 13.6 (12.2 to 15.1) | 16 (14.4 to 17.6) | 15.7 (13.9 to 17.5) | 13.9 (12.3 to 15.6) | 9.6 (6.9 to 12.2) | 13.8 (10.9 to 16.6) | 13.7 (11.8 to 15.5) | 13.7 (12.1 to 15.3) |
| Age of smoking cessation‡ | 24.5 (15.8 to 33.2) | 25.5 (23.4 to 27.6) | 31.7 (28.9 to 34.5) | 37.3 (34.3 to 40.3) | 45.3 (42.2 to 48.5) | 33.6 (31.6 to 35.7) | 42.0 (35.5 to 48.5) | 33.4 (30.2 to 36.5) | 34.4 (31.9 to 36.8) | 34.1 (32.1 to 36.1) |
| No of times of use of pipe and chopogh per day§ | 2 (2 to 2) | 1 (1 to 1) | 1.7 (1 to 2.4) | 15 (15 to 15) | 1 (1 to 1) | 2.2 (0.6 to 3.8) | 2 (2 to 2) | 2 (1 to 3.1) | 2.3 (0.4 to 4.2) | 2.2 (0.8 to 3.6) |
| No of times of use of water-pipe per day | 5.3 (0.4 to 10.3) | 2.1 (1.5 to 2.7) | 1.9 (1.5 to 2.3) | 3.4 (1.4 to 5.3) | 5.2 (0.4 to 10.8) | 2.8 (1.6 to 3.9) | 4.5 (0.8 to 8.2) | 2.2 (1.6 to 2.8) | 4.5 (1.7 to 7.3) | 3.5 (1.8 to 5.2) |
Data are mean and 95% confidence limits in parentheses.
↵* Age of initiating smoking as a daily habit.
↵† The number of cigarettes smoked daily at the time of the study.
↵‡ The age of quitting daily consumption of any type of cigarettes (factory-made cigarettes, hand-made cigarettes or cigars).
↵§ The times of smoking pipe and chopogh which are full of tobacco.