Table 4.

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.