Table 3. Multivariable analysis of physician type associated with testing for co-infections, controlling for patient demographic factors.

Physician type	Odds ratio	95% CI	P value
Testing for HAV
GI vs. other	3.40	1.6–7.1	0.003
PCP vs. other	3.27	1.5–7.0	0.003
ID vs. other	6.45	2.3–18.2	0.003
GI vs. PCP	1.04	0.8–1.4	0.56
ID vs. PCP	1.97	0.9–4.4	0.78
ID vs. GI	1.90	0.9–4.1	0.23
Testing for HCV
ID vs. PCP	3.70	1.1–12.8	< 0.0001
ID vs. GI	4.40	1.3–14.4,	< 0.0001
ID vs. other	3.66	0.9–15.4	0.77
Other vs. PCP	1.02	0.4–2.4	0.55
Other vs. GI	1.19	0.5–2.7	0.96
PCP vs. GI	1.16	0.8–1.7	0.67
Testing for HIV
ID vs. PCP	16.39	4.9–55.0	< 0.0001
ID vs. GI	18.92	5.8–62.5	< 0.0001
ID vs. other	10.51	2.6–41.7	< 0.0001
Other vs. PCP	1.56	0.7–3.3	0.84
Other vs. GI	1.80	0.9–3.7	0.26
PCP vs. GI	1.16	0.8–1.6	0.35

CI, confidence interval; GI, gastroenterology; HAV, hepatitis A virus; HCV, hepatitis C virus; PCP, primary care physician.