TABLE 4.

Comparison of Bivariate and Multivariate Analysis of Factors Associated With HIV Viral Suppression (HIV-RNA Levels <200 Copies/mL)

Characteristic	Bivariate odds ratio (95% CI)	P value	Multivariable (95% CI)	P value
Aged at least 50 y	2.300 (1.565-3.380)	< 0.001	1.735 (1.142-2.636)	0.010
Males	0.737 (0.491-1.106)	0.141	0.574 (0.375-0.878)	0.010
Insurance
Medicare	2.488 (1.493-4.146)	< 0.001	1.832 (1.063-3.159)	0.029
Medicaid	Ref	—	Ref	—
Commercial	2.216 (1.353-3.630)	0.002	1.975 (1.190-3.277)	0.008
PDC level
Less than 50%	0.110 (0.059-0.203)	< 0.001	0.135 (0.072-0.253)	< 0.001
50% to less than 75%	0.276 (0.163-0.469)	< 0.001	0.295 (0.173-0.503)	< 0.001
75% to less than 80%	0.802 (0.319-2.017)	0.639	0.809 (0.320-2.041)	0.653
80% to less than 85%	1.613 (0.549-4.742)	0.385	1.585 (0.538-4.671)	0.403
85% to less than 90%	0.525 (0.250-1.105)	0.090	0.539 (0.255-1.139)	0.105
At least 90%	Ref	—	Ref	—

PDC = proportion of days covered; Ref = reference; y = years.