Longitudinal analysis of HIV-risk behaviors of participants in a randomized trial of prison-initiated buprenorphine

Table 3 Results of the multilevel Poisson model for sex without a condom in the last 30 days

Effect	b	SE	ERR (95% CI)	t	d.f.	p
For intercept π₀
Intercept β₀₀	2.70	0.09	14.88 (12.47, 17.75)	30.18	190	< 0.001
Gender β₀₁	0.09	0.17	1.09 (0.79, 1.53)	0.54	190	0.59
For days slope π₁
Intercept β₁₀	− 0.001	0.0003	0.99 (0.998, 0.999)	− 4.23	592	< 0.001
Condition β₁₁	0.0007	0.0004	1.00 (1.00, 1.00)	1.90	592	0.059
Gender β₁₂	0.0001	0.0004	1.00 (1.00, 1.00)	0.35	592	0.73
Community treatment entry β₁₃	0.00002	0.0005	1.00 (1.00, 1.00)	0.04	592	0.97
Condition * community treatment entry β₁₄	− 0.001	0.0007	0.99 (0.997, 1.00)	− 2.15	592	0.03

N = 211. b denotes the unstandardized partial regression coefficient; SE denotes its standard error. ERR denotes the event rate ratio for a one unit increase in the given variable. t denotes the t statistic for the given parameter estimate and d.f. is its degrees of freedom. Participant gender; male = 0; female = 1. Treatment condition; buprenorphine initiated in the community = 0; buprenorphine initiated in prison = 1. Whether or not the participant entered community treatment within 10 days of release from prison; no = 0; yes = 1

ISSN: 1940-0640