Table 1:

Type and route of drug administration among prisoners

	Number	Percent
Total substance users	568	64.5
Type of substance
Opium	324	57
Heroin	27	4.7
Crystal methamphetamine	40	7
Multi-drug use	177	31.3
Route of administration
Smoking	435	76.6
Injection	25	4.4
Oral	21	3.7
Combine injection and other ways	34	6.1
Combine smoking and other ways	53	9.2