Table 2.

Mixed Model Results for Primary and Secondary Outcomes (n=84)

Model Parameters	DDD		PHDD		PACS
	β	B (SE)	β	B (SE)	β	B (SE)
Time	−.27	−.52 (.17)**	−.27	−5.68 (1.88)**	−.34	−0.26 (.07)***
Sex (male coded +5)	.20	1.36 (.71)	−.01	−0.59 (6.56)	−.12	−0.27 (.27)
Age	−.03	−0.008 (.02)	.18	0.38 (.22)	.15	0.01 (.01)
Typical drinks at screening	.43	0.37 (.11)**	.35	2.50 (0.89)**	.22	0.06 (.03)*
Number of groups attended	−.24	−0.25 (.11)*	−.26	−2.25 (.84)**	.17	0.06 (.04)
Treatment (active tDCS coded +5)	−.11	−0.72 (.76)	−.03	−1.81 (8.46)	.04	0.09 (.32)

Note.

^*p<0.05;

^**p<0.01;

^***p<0.001.

β = standardized coefficient; B (SE) = unstandardized regression coefficient (standard error); DDD = Drinks per drinking day; PHDD = Percent heavy drinking days; PACS = Penn Alcohol Craving Scale.