Table II.

GEE model results: Drug use instances.

	B	95%CI	expB	overall effect
Intercept	1.25**	(0.63, 1.87)	3.48	Wald χ2 (1) = 10.02**
Race (ref = non-white)	0.67**	(0.26, 1.08)	1.95	Wald χ2 (1) = 10.22**
Education (ref = < 4 yr degree)	−0.97**	(−1.46, −0.47)	0.38	Wald χ2 (1) = 14.70**
Partnered status (ref = single)	−0.16	(−1.00, 0.69)	0.56	Wald χ2 (1) = 1.55
Time (ref = baseline)				Wald χ2 (4) = 14.51**
3 month	−0.73**	(−1.30, −0.17)	0.48
6 month	−1.13**	(−2.02, −0.23)	0.33
9 month	−0.95*	(−1.72, −0.18)	0.39
12 month	−1.14**	(−1.94, −0.35)	0.32
Partnered X Time interaction				Wald χ2 (4) = 10.71**
3 month	0.59	(−0.32, 2.72)	1.80
6 month	1.28	(−1.81, 0.78)	3.60
9 month	−0.51	(−0.09, 2.65)	0.60
12 month	1.11	(−0.32, 1.50)	3.05

^*p ≤ .05;

^**p ≤ .01