Table 2. Odds ratios for catheter-associated urinary tract infection by multi-level logistic regression.

	Univariate			Multivariate
	OR	95% CI	P	OR	95% CI	P
Use of antimicrobial catheter	0.9	0.78–1.03	0.13	0.92	0.80–1.07	0.28
Female	1.32	1.21–1.44	<0.001	1.07	0.98–1.18	0.14
Age	1.03	1.03–1.04	<0.001	1.03	1.03–1.03	<0.001
Cancer	1.18	0.99–1.40	0.058	1.19	1.00–1.42	0.045
Diabetes (vs without diabetes)
With diabetes, not on insulin	0.82	0.70–0.96	0.012	0.91	0.78–1.07	0.24
With diabetes, on insulin	1.35	1.19–1.52		1.43	1.26–1.63	<0.001
ADL (vs very good)
Good	1.24	0.91–1.68	0.17	1.14	0.84–1.55	0.41
Poor	1.49	1.18–1.89	0.001	1.33	1.05–1.69	0.019
Very poor	2.06	1.71–2.49	<0.001	1.67	1.37–2.02	<0.001
Length of stay	1.01	1.01–1.01	<0.001	1.01	1.01–1.01	<0.001
Underwent surgery	0.92	0.82–1.04	0.21	0.81	0.71–0.92	0.001
Received tPA	0.68	0.60–0.78	<0.001	0.72	0.63–0.83	<0.001
Number of cases during study period (vs 1–14)
15–49	0.96	0.71–1.30	0.773	1.21	0.89–1.65	0.222
≥50	1.22	0.92–1.63	0.174	1.63	1.22–2.20	0.001

ADL, activities of daily living; tPA, tissue plasminogen activator; OR, odds ratio.