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

Table 6 Results of the multilevel Poisson model for sharing injection paraphernalia in the last 30 days

Effect	b	SE	ERR (95% CI)	t	d.f.	p
For intercept π₀
Intercept β₀₀	2.51	0.28	12.30 (7.11, 21.30)	9.05	94	< 0.001
Gender β₀₁	0.32	0.42	1.38 (0.60, 3.19)	0.77	94	0.45
For days slope π₁
Intercept β₁₀	− 0.004	0.001	0.996 (0.993, 0.998)	− 3.4	118	< 0.001
Condition β₁₁	0.003	0.002	1.00 (1.00, 1.00)	1.92	118	0.06
Gender β₁₂	0.0003	0.002	1.00 (1.00, 1.00)	0.20	118	0.84
Community treatment entry β₁₃	− 0.007	0.004	0.99 (0.99, 1.00)	− 1.72	118	0.09
Condition * community treatment entry β₁₄	–	–	–	–	–	–

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