Table 2. Estimation of the Drug Abuse Prevalence Based on Crosswise Model ^a.

Items	Male (N = 814)	Female (N = 830)	Total (N = 1644)
Use of illicit drugs throughout the lifetime	21.4 (13.1 - 29.8)	16.9 (8.7 - 25.1)	19.0 (13.1 - 24.8)
Use of illicit drugs during the last month	6.1 (0 - 14.1)	0.9 (0 - 8.7)	3.5 (0 - 9.1)
Use of opium or its burnt during the last month	3.9 (0 - 11.9)	2.1 (0 - 10.0)	3.0 (0 - 8.6)
Use of opium or its burnt throughout the lifetime	18.9 (10.7 - 27.3)	11.4 (3.4 - 19.5)	14.9 (9.1 - 20.7)

^a Data are presented as % (95%CI).