Table 2.

ASSIST scores at baseline and month 6

Characteristic	Baseline completed (n = 54)		6 months completed (n = 41)		p value
	Median	IQR	Median	IQR
Substance
Tobacco	18	15–24	22	18–24	0.4782
Opioids	37	33–39	9	3–23	< 0.0001
Alcohol	0	0–6	2	0–6	0.4388
Cannabis	12.5	3–23	21	17–26	0.0003
Cocaine	0	0–3	6	0–14	0.0541
Amphetamine type stimulant	0	0	0	0	0.1288
Total	81.5	67–93	67	49–90	0.0052
	n	%	n	%	p value
Never injected	41	76%	28	68%	0.1573
Last injected > 3 months ago	4	7%	8	20%	0.0956
Injected < 3 months ago	9	17%	5	12%	0.6547
Injection frequency among those who injected in last 3 months
< once weekly or < 3 days in a row	3	33%	2	40%	0.5637
> once weekly or > 3 days in a row	6	67%	3	60%	1.0000