Table 2.

Logistic regression of all confirmed cases of malaria, hepatitis A, and influenza. Hospitalizations in the cohort of the total population of Ohio from 2010 through 2014 (suspect and probable reports were excluded from the cases).

Model	Exposure	B	Exp(B)	95% CI for Exp(B)		Model
Infectious disease				Lower	Upper	R square
Hepatitis A 774 controls 162 cases	Female	−0.226	0.798	0.56	1.14	0.121
	Hispanic	−0.357	0.700	0.29	1.71
	Non-White	−0.613	0.542	0.32	0.91
	History of travel	2.475	11.877	6.15	22.94
	Metropolitan area (>300,000)	0.566	1.761	1.21	2.57
	Constant	−1.760	0.172
Influenza hospitalizations 3,171 controls 6,791 cases	Female	0.065	1.068	0.98	1.16	0.002
	Hispanic	−0.230	0.795	0.64	0.99
	Non-White	0.076	1.079	0.97	1.19
	History of travel	1.507	4.511	1.05	19.39
	Metropolitan area (>300,000)	−0.101	0.904	0.83	0.99
	Constant	0.766	2.150
Malaria 9,783 controls 179 cases	Female	−0.741	0.476	0.33	0.69	0.364
	Hispanic	−0.801	0.449	0.17	1.19
	Non-White	1.880	6.554	4.26	10.09
	History of travel	7.310	1494.4	320.17	6975.48
	Metropolitan area (>300,000)	0.378	1.459	0.93	2.29
	Constant	−5.218	0.005

Note. Exposures were assessed retrospectively from case records and matched to controls by county of residence.