Table 2.

Results from mediation analyses to examine whether changes in depression mediate the effect of AA attendance on alcohol use outcomes at early follow-up (3, 6, 9 months; Fig.1; Aim 1; Analysis 1, 2).

PDA early (n = 194)	Coeff	SE	t	p
Path A (to BDI 6 months)
AA 3 months	−5.043	2.432	−2.073	0.040
PDA baseline	−0.009	2.336	−0.004	0.997
Path A (to PDA 6 months)
AA 3 months	0.441	0.075	5.875	0.000
BDI baseline	−0.004	0.002	−1.751	0.082
Path B (to PDA 9 months)
BDI 6 months	−0.004	0.003	−1.415	0.159
AA 3 months	−0.059	0.088	−0.669	0.505
BDI baseline	0.001	0.003	0.526	0.599
Total Effect (to PDA 9 months)
AA 3 months	0.282	0.102	2.757	0.006
BDI baseline	−0.003	0.003	−1.195	0.234
	Coeff	Boot SE	Boot LLCI	Boot ULCI
Indirect effect (BDI 6 months is mediator)	0.013	0.012	−0.002	0.051
Indirect Effect (PDA 6 months is mediator)	0.221	0.043	0.141	0.310
DPDD early (n=194)	Coeff	SE	t	p
Path A (to BDI 6 months)
AA 3 months	−4.723	2.394	−1.973	0.050
DPDD baseline	−0.293	0.507	−0.579	0.563
Path A (to DPDD 6 months)
AA 3 months	−1.482	0.437	−3.388	0.001
BDI baseline	0.023	0.010	2.204	0.029
Path B (to DPDD 9 months)
BDI 6 months	0.023	0.011	2.060	0.041
AA 3 months	−0.293	0.347	−0.845	0.399
BDI baseline	−0.0001	0.010	0.008	0.994
Total Effect (to DPDD 9 months)
AA 3 months	−1.177	0.437	−2.694	0.008
BDI baseline	0.022	0.011	2.023	0.044
	Coeff	Boot SE	Boot LLCI	Boot ULCI
Indirect effect (BDI 6 months is mediator)	−0.019	0.013	−0.055	−0.0004
Indirect effect (DPDD 6 months is mediator)	−0.138	0.043	−0.234	−0.065

PDA = percent days abstinent, DPDD = drinks per drinking day, BDI = beck depression inventory, AA = AA attendance, Coeff = coefficient, SE = standard error, LLCI = lower level of confidence interval, ULCI = upper level of confidence interval. All indirect effect values are completely standardized.