Table 3.

Effectiveness of interventions (showing mean scores at baseline, 3 month follow-up and mean reduction)

	Control mean (SD)	MI mean (SD)	MI-PST mean (SD)
Substance use: ASSIST
Baseline	19.30 (5.78)	19.96 (6.49)	18.71 (6.32)
3 month follow-up	11.91 (6.94)	12.28 (6.81)	9.89 (6.64)
aMean reduction	7.39	7.68	8.82
Depression: CES-D
Baseline	24.56 (6.02)	23.93 (5.43)	27.28 (8.22)
3 month follow-up	20.13 (7.09)	17.77 (8.12)	16.64 (8.17)
aMean reduction	4.43	6.16	10.64

SD standard deviation

^aMean reduction is the difference between scores at baseline and follow-up