Substance use: 4. Averages of various measures (skewed data)
Study	Intervention	Mean	SD	N
Alcohol ‐ estimated daily consumption ‐ past month ‐ 3 months
Baker 2006	Treatment	4.92	4.69	21
Baker 2006	Control	3.35	4.10	31
Alcohol ‐ estimated daily consumption ‐ past month ‐ 6 months
Baker 2006	Treatment	3.73	4.07	21
Baker 2006	Control	2.52	4.20	31
Alcohol ‐ estimated daily consumption ‐ past month ‐ 12 months
Baker 2006	Treatment	3.58	4.80	18
Baker 2006	Control	2.19	3.04	28
Alcohol ‐ frequency per month by 6 months
Kemp 2007	Treatment	3.1	3.8	10
Kemp 2007	Control	2.3	3.8	6
Alcohol quantity per session ‐ 6 months
Kemp 2007	Treatment	4.7	2.9	10
Kemp 2007	Control	3.6	2.8	6
Alcohol Assessment ‐ AUDIT ‐ 6 months
Kemp 2007	Treatment	9.3	6.9	10
Kemp 2007	Control	4.8	5	6
General ‐ ASI score ‐ 6 months
Bellack 2006	Treatment	72.90	249	61
Bellack 2006	Control	74.10	155	49
Drug abuse screening test ‐ DAST‐10 by 6 months
Kemp 2007	Treatment	1.8	1.9	10
Kemp 2007	Control	3.5	2.4	6
Amphetamine‐ estimated daily consumption ‐ past month ‐ 6 months
Baker 2006	Treatment	0.19	0.41	11
Baker 2006	Control	1.47	2.28	9
Amphetamine‐ estimated daily consumption ‐ past month ‐ 3 months
Baker 2006	Treatment	0.34	0.53	11
Baker 2006	Control	0.25	0.57	9
Amphetamine‐ estimated daily consumption ‐ past month ‐ 12 months
Baker 2006	Treatment	0.14	0.26	9
Baker 2006	Control	0.01	0.25	8
Cannabis‐ estimated daily consumption ‐ past month ‐ 3 months
Baker 2006	Treatment	5.09	7.21	39
Baker 2006	Control	5.66	8.72	34
Cannabis‐ estimated daily consumption ‐ past month ‐ 6 months
Baker 2006	Treatment	5.37	11.75	39
Baker 2006	Control	4.67	8.68	34
Cannabis‐ estimated daily consumption ‐ past month ‐ 12 months
Baker 2006	Treatment	8.53	14.59	29
Baker 2006	Control	4.12	6.51	29
cannabis ‐ days of use last month by 6 months
Hjorthoj 2013	Treatment	12	11.44	38
Hjorthoj 2013	Control	15.6	12.58	30
Cannabis ‐ days of use last month by 10‐12 months
Hjorthoj 2013	Treatment	11.1	11.19	37
Hjorthoj 2013	Control	13.7	13.31	31
Cannabis ‐ joints last 30 days by 6 months
Hjorthoj 2013	Treatment	28.6	38.75	38
Hjorthoj 2013	Control	47.1	58.26	30
Kemp 2007	Treatment	38.8	113.1	10
Kemp 2007	Control	25.3	61.1	6
Cannabis ‐ joints last 30 days by 10 months
Hjorthoj 2013	Treatment	26.8	38.21	37
Hjorthoj 2013	Control	44.6	58.46	31
Proportion of days abstinence from all substances last 90 days by 6 months
Barrowclough 2010	Treatment	34.27	34.01	147
Barrowclough 2010	Control	30.06	35.18	148
Proportion of days abstinence from all substances last 90 days by 12 months
Barrowclough 2010	Treatment	40.24	36.18	137
Barrowclough 2010	Control	34.51	34.18	136
Proportion of days abstinence from all substances last 90 days by 18 months
Barrowclough 2010	Treatment	38.17	37.23	129
Barrowclough 2010	Control	38.47	34.94	127
Proportion of days abstinence from all substances last 90 days by 24 months
Barrowclough 2010	Treatment	44.25	38.36	130
Barrowclough 2010	Control	37.18	36.89	117