3.4. Analysis.

Comparison 3 Cognitive behavioural therapy versus standard care, Outcome 4 Substance use: 2. Average score (various scales) (skewed data).

Substance use: 2. Average score (various scales) (skewed data)
Study	Intervention	Time period	Mean	SD	N
CASUAS
Edwards 2006	Treatment	3 months	1.4	1.4	23
Edwards 2006	Control		1.3	1.4	24
Edwards 2006	Treatment	6 months	1.4	1.4	23
Edwards 2006	Control		1.3	1.5	24
HONOS ‐ item 3
Naeem 2005	Treatment	3 months	0.85	1.00	67
Naeem 2005	Control		0.88	0.88	38
Naeem 2005
Naeem 2005