Table 3.

Estimates of current use of water-pipe and of pipe/chopoq, Iran, 2007

Variable	Subcategory	Current use of water-pipe		Current use of pipe and chopoq
		Burden	Prevalence (95% CI)	Burden	Prevalence (95% CI)
Age	15–24	489710	2.8% (1.8 to 4.1)	39700	0.2% (0.1 to 0.9)
	25–34	338520	2.7% (1.9 to 3.7)	36150	0.3% (0.1 to 0.9)
	35–44	266250	3.0% (2.2 to 3.9)	64300	0.7% (0.3 to 1.6)
	45–54	173120	2.8% (1.9 to 4.0)	5655	0.1% (0.0 to 0.7)
	55–64	73300	2.2% (1.5 to 3.3)	6675	0.2% (0.0 to 0.8)
Sex	Male	876350	3.5% (2.7 to 4.7)	140400	0.6% (0.3 to 0.9)
	Female	464550	1.9% (1.4 to 2.5)	12080	0.0% (0.0 to 0.4)
Residential area	Urban	763100	2.2% (1.7 to 2.8)	114300	0.3% (0.2 to 0.6)
	Rural	577800	4.0% (3.0 to 5.3)	38180	0.3% (0.1 to 0.9)
TOTAL		1340900	2.7% (2.2 to 3.4)	152480	0.3% (0.2 to 0.5)