Table 4.

Multivariable analysis of the odds of undetectable human immunodeficiency virus (HIV) viral load in 2012 in relation to Rx refill use (Rx refill included as ordinal variable), for assessment of dose effect (n=3289).

Variable	Estimate	Odds ratio	95% CI	P value
Use Rx refill 0 years (ref)	-	-	-	-
Use Rx refill 1 year	0.3194	1.376	1.02-1.87	.04
Use Rx refill 2-3 years	0.3016	1.352	1.07-1.71	.01
Age	0.0132	1.013	1.00-1.02	.004
Male	0.2556	1.291	0.86-1.94	.22
White race	0.3995	1.491	1.21-1.83	<.001
Economic need (means test)	-0.101	0.904	0.78-1.05	.19
Married	-0.052	0.949	0.78-1.16	.61
Elixhauser score	-0.009	0.991	0.96-1.03	.61
Problem alcohol use	-0.007	0.993	0.84-1.17	.93
Substance use	-0.059	0.943	0.76-1.17	.60
Depression	-0.067	0.935	0.79-1.11	.44
Psychoses	-0.417	0.659	0.46-0.95	.03
Rural	0.1501	1.162	0.86-1.57	.33