Table 2. Growth Curve Models of Trajectory Class, Drinking Goal, and Time on Percent Days Abstinent and Percent Heavy Drinking Days (n = 100)

Variables	PDA				%HDD
Variables	Num df	Den df	F	P	Num df	Den df	F	P
Trajectory class	2	216	9.75	<.001	2	216	6.76	<.01
Drinking goal	1	216	5.56	<.05	1	216	0.26	.61
Time	1	284	89.5	<.001	1	284	128.5	<.001
Trajectory class × drinking goal	2	216	0.02	.98	2	216	0.08	.92
Trajectory class × time	2	284	4.15	<.05	2	284	3.23	<.05
Drinking goal × time	1	284	11.67	<.01	1	284	6.63	<.05
Trajectory class × drinking goal × time	2	284	7.54	<.01	2	284	2.14	.12

%HDD, percent heavy drinking days; PDA, percent days abstinent; Num df, numerator degrees of freedom; Den df, denominator degrees of freedom.