Table 3.

Parameter estimates for linear growth model of drinks per day as a function of hazard and nonhazard Alcohol Use Disorders Identification Test group membership.

Parameter		Estimate (SE)	t/z a	df	P value	95% CI
Fixed effects (intercept, slopes)
	Intercept (Day 0)	0.67 (0.08)	8.68	2301.73	<.001	0.52 to 0.82
	Time	–0.01 (0.01)	–1.80	13418.00	.07	–0.02 to 0.001
	Hazard	1.48 (0.11)	13.26	2301.73	<.001	1.26 to 1.70
	Hazard by time	–0.03 (0.01)	–3.50	13418.00	<.001	–0.04 to–0.01
Random effects ([co-]variances)
	Between-person (level 2) intercept	0.74 (0.06)	12.28	—b	<.001	0.63 to 0.87
	Within-person (level 1) residual	7.54 (0.09)	81.91	—	<.001	7.37 to 7.73

^at test value for fixed effects parameters; Wald z value for random effects parameters.

^bNot applicable.