Substance use: 3a. Alcohol use: average score (AUS) (skewed data)
Study	Intervention	Mean	SD	N
6 months
Drake 1998a	Treatment	3.12	1.03	70
Drake 1998a	Control	2.97	1.09	65
Essock 2006	Treatment	2.90	1.30	68
Essock 2006	Control	3.00	1.10	61
12 months
Drake 1998a	Treatment	3.17	1.05	75
Drake 1998a	Control	2.84	1.23	66
Essock 2006	Treatment	2.80	1.30	64
Essock 2006	Control	3.10	1.0	62
18 months
Drake 1998a	Treatment	3.07	1.15	75
Drake 1998a	Control	2.79	1.10	65
Essock 2006	Treatment	2.80	1.20	65
Essock 2006	Control	2.90	1.20	65
24 months
Drake 1998a	Treatment	2.98	1.07	73
Drake 1998a	Control	2.79	1.16	67
Essock 2006	Treatment	2.60	1.20	60
Essock 2006	Control	3.0	1.20	63
30 months
Drake 1998a	Treatment	2.86	1.09	72
Drake 1998a	Control	2.96	1.18	65
Essock 2006	Treatment	2.80	1.20	58
Essock 2006	Control	2.80	1.20	59
36 months
Drake 1998a	Treatment	2.70	1.12	74
Drake 1998a	Control	2.82	1.16	68
Essock 2006	Treatment	2.70	1.0	58
Essock 2006	Control	2.80	1.30	60