Table 1.

Demographics of participants (all observations)

	Mean value or percentage	N
Age (mean (SD))	41.7 (11.5)	1140
Female gender (%)	20	1140
Born in Sweden (%)	84	1129
Independent living (%)	36	1104
Employed (%)	14	1104
Health status* (%)
Hepatitis B positive	1	1101
Hepatitis C positive	66	1083
HIV positive	7	1126
Opioid agonist therapy (OAT) (%)	24	880
Injection drug use the past month (%)		1103
Daily	54
A few times a month	41
Less often than once a month	5
Last drug used (%)		1127
Heroin	32
Amphetamine	51
Buprenorphine	6
Methylphenidate	4
Other	6

*Health status indications are not mutually exclusive