Behaviour: 5. Specific: alcohol or drug use (various subscales) (skewed data)
Study	Intervention	Mean	SD	N
Alcohol/drug use (BASIS‐24, high = strong) – medium term
Eisen 2012	Peer support	0.51	0.62	74
Eisen 2012	Standard care	0.56	0.83	84
Alcohol use (Addiction Severity Index (ASI), high = strong) – medium term
Rowe 2007	Peer support	0.10	0.18	41
Rowe 2007	Standard care	0.10	0.13	27
Alcohol use (ASI, high = strong) – long term
Rowe 2007	Peer support	0.07	0.13	40
Rowe 2007	Standard care	0.11	0.16	29
Drug use (ASI, high = strong) – medium term
Rowe 2007	Peer support	0.04	0.06	41
Rowe 2007	Standard care	0.07	0.09	27
Drug use (ASI, high = strong) – long term
Rowe 2007	Peer support	0.04	0.05	40
Rowe 2007	Standard care	0.04	0.07	29