Table 2.

Estimated regression coefficients and confidence intervals from the continuous-time Weibull model of edge-wise recruitment time. Testing β, θ₂, and κ for equality with zero gives χ² = 83.74 with degree of freedom 19, and p-value 4.19 × 10⁻¹⁰.

Covariate	γ	exp(γ)	95% CI of exp(γ)
Intercept	−4.28	0.01	0.005, 0.039
drug using	−0.61	0.54	0.335, 0.877
drug injection	−0.17	0.85	0.524, 1.369
needle using	−0.07	0.93	0.532, 1.624
sharing activity	0.56	1.75	1.117, 2.739
sex	0.73	2.07	1.262, 3.401
hivp	−0.10	0.91	0.566, 1.455
recruiter’s gender	0.42	1.52	1.078, 2.145
recruiter’s crack using	−0.13	0.88	0.669, 1.157
recruiter’s homelessness	0.08	1.08	0.814, 1.440
recruiter’s age	−0.01	0.99	0.970, 1.002
alter’s gender	0.02	1.02	0.729, 1.426
alter’s crack using	−0.25	0.78	0.595, 1.014
alter’s homelessness	0.22	1.25	0.952, 1.634
alter’s age	0.03	1.03	1.015, 1.043
recruiter black	−0.60	0.55	0.224, 1.330
recruiter white	−0.10	0.90	0.370, 2.208
alter black	0.22	1.24	0.559, 2.758
alter white	0.31	1.37	0.622, 3.015
gender difference	0.09	1.09	0.783, 1.528
crack using difference	0.20	1.22	0.937, 1.578
homelessness difference	−0.46	0.63	0.483, 0.832
age difference	−0.0028	1.00	0.980, 1.015
black difference	0.67	1.95	0.795, 4.773
white difference	−0.18	0.84	0.341, 2.051
hispanic difference	−0.19	0.83	0.358, 1.900