Table 1. Descriptive Statistics for Mindfulness and Craving Scores by Treatment Group across Studies.

	Study 1			Study 2
Measure	TAU Mean(SD)	MBRP Mean(SD)	d	TAU Mean(SD)	MBRP Mean(SD)	d
AAQ
Baseline	3.93(0.80)	3.92(0.62)	0.01	3.86(0.74)	3.99(0.54)	−0.20
Post-treatment	3.97(0.84)	4.27(0.65)	−0.40	4.04(0.76)	4.00(0.65)	0.06
FFMQ Act awareness
Baseline	3.46(0.86)	3.27(0.78)	0.24	3.36(0.84)	3.46(0.75)	−0.13
Post-treatment	3.31(0.90)	3.39(0.87)	−0.08	3.47(0.77)	3.42(0.70)	0.07
FFMQ Nonjudgment
Baseline	3.37(0.83)	3.21(0.78)	0.20	3.67(0.84)	3.80(0.85)	−0.15
Post-treatment	3.17(0.77)	3.54(0.86)	−0.46	3.43(0.83)	3.41(0.79)	0.03
PACS
Baseline	1.73 (1.42)	1.55 (1.13)	0.14	1.62(1.32)	1.23 (0.91)	0.34
Post-treatment	1.70 (1.42)	1.12 (1.05)	0.46	1.33 (1.26)	1.10 (1.05)	0.21
2-month follow-up	1.42 (1.49)	0.98 (0.98)	0.35	0.94 (1.07)	1.13 (1.12)	−0.18
4-month follow-up	1.28 (1.50)	1.09 (1.26)	0.14	1.02 (0.98)	0.87 (0.85)	0.16

Note. MBRP = mindfulness based relapse prevention; d = Cohen’s d measure of effect size calculated at each time point using the formula $d=\frac{x_1-x_2}{S{D}_{pool}}$ where $S{D}_{pool}=\sqrt[2]{(S{D}_1^2+S{D}_1^2)/2}$