Table 2.

Unadjusted and adjusted odds ratios and 95% confidence intervals for a priori variables, or those that were significant in chi-square or Fisher’s exact testing

Variable	Odds ratio OR (95% CI)	Wald chi-square p - value	Adjusted odds ratio aOR (95% CI)	Wald chi-square p - value
Healthcare site
RUMC UCM	REF 1.00 (0.52, 1.91)	0.99	REF 1.20 (0.52, 2.76)	0.67
Number of encounters	1.00 (1.00, 1.00)	0.99	1.00 (1.00, 1.00)	0.59
Race
White African American Other/Unknown	REF 4.98 (1.47, 16.90) 1.54 (0.29, 8.16)	0.003 0.59	REF 4.87 (1.21, 19.53) 1.39 (0.23, 8.35)	0.03 0.57
Ethnicity
Non-Hispanic/Latino Hispanic/Latino	REF 0.33 (0.10, 1.14)	0.08	REF 0.89 (0.16, 4.97)	0.89
Age
18–26 27–35 36–47 ≥ 48	REF 0.51 (0.21, 1.23) 0.84 (0.36, 1.93) 0.42 (0.17, 1.08)	0.42 0.37 0.17	REF 0.62 (0.24, 1.65) 0.88 (0.34, 2.31) 0.37 (0.12, 1.17)	0.83 0.37 0.12
Substance use
No Yes	REF 3.12 (1.12, 8.65)	0.03	REF 1.94 (0.49, 7.64)	0.34
Hepatitis C
No Yes	REF 5.73 (1.24, 26.51)	0.02	REF 4.54 (0.59, 34.88)	0.15
Pregnancy
No Yes	REF 1.96 (1.00, 3.84)	0.05	REF 1.69 (0.74, 3.86)	0.21
STIs
No Yes	NA	NA	NA	NA