Table 3.

Planned Contrasts on Prolonged Abstinence With Cohen’s h Effect Size Estimate

Months After Target Quit Date	% Abstinent		P Value	Cohen’s h
CONCERNS + B vs CONCERNS + P	CONCERNS + B (n = 106)	CONCERNS + P (n = 87)
3	41	18	.001	.51
6	34	11	.001	.57
12	24	8	.006	.45
CONCERNS + B vs STANDARD + B	CONCERNS + B (n = 106)	STANDARD + B (n = 89)
3	41	33	.25	.17
6	34	21	.053	.29
12	24	19	.45	.12
STANDARD + B vs STANDARD + P	STANDARD + B (n = 89)	STANDARD + P (n = 67)
3	33	19	.07	.32
6	21	10	.08	.31
12	19	7	.046	.37

Abbreviations: See Table 1 footnote for treatment group abbreviations.