Table 1.
Effect | Percentage of days abstinent |
Drinks per drinking day |
||||
F | df | p | F | df | p | |
Pro-abstainer main effect | 3.96 | 5,15977 | .0014 | 1.52 | 5,12283 | .1794 |
Pro-abstainer by strata interaction | 0.09 | 1, 1346 | .7662 | 0.02 | 1,712.49 | .8873 |
Stratification main effect | 0.83 | 4, 37649 | .5070 | 0.69 | 4, 29724 | .6009 |
Pro-drinker main effect | 10.08 | 5,13001 | <.0001 | 5.22 | 5,13774 | <.0001 |
Pro-drinker by strata interaction | 2.38 | 1,3326.4 | .1229 | 0.80 | 1,2407.9 | .3708 |
Stratification main effect | 1.83 | 4,68711 | .1200 | 1.10 | 4,74775 | .3533 |