Table 2.

HIV Risk behavior

	HIV negative					HIV positive					P values
	0W	4W	8W	12W	20W	0W	4W	8W	12W	20W	HIV	Time (visit)	HIV*time
Drug use behavior a
Mean number of days Alcohol use	4.8	2.1	2.7	2.5	2.6	5.0	0.79	0.33	1.0	1.7	0.4445	0.3394	0.6284
Mean number of days Heroin use	3.8	0.04	0	0	0	4.9	0.04	0	0	0	0.6836	<.0001	0.8692
Mean number of days Other opiates/Analgesics	17.7	0.13	0.29	0.17	0.08	23.7	0.13	0.29	0.13	0.78	0.9319	<.0001	0.1080
Mean number of days Sedatives/Hypnotics/Tranquilizers	8.7	0.13	0.25	0.20	0.08	10.0	0	0.04	0	0.22	0.9179	0.1057	0.8012
Mean number of days Cannabis	6.9	1.3	1.25	1.13	1.3	3.0	0.63	0	0.08	1.1	0.1451	0.4277	0.7927
Risk behavior b
Mean RAB drug score	3.3	0.91	0.33	0.17	0.08	3.9	0.83	0.13	0.17	0.74	0.4324	<.0001	0.4516
Mean RAB sex score	3.9	2.9	3.3	2.9	2.8	4.3	3.3	3.3	3.3	3.0	0.5657	<.0001	0.7969
Mean RAB total score	7.2	3.8	3.6	3.1	2.9	8.2	4.1	3.4	3.5	3.8	0.5028	<.0001	0.7304

^aNegative binomial models

^bMixed models (log of dependent variable)