Table 3.

Odds Ratios for In-Hospital Mortality Among Patients With Myocardial Infarction Admitted to Urban vs Rural Hospitals, Using Logistic Regression Models

Logistic Regression Model	OR (95% CI) (Urban vs Rural Hospitals)	PValue of the Hospital Variable	cStatistic
Unadjusted	0.42 (0.35–0.50)	<.001	0.56
Adjusted for demographic characteristics (age, sex, race, admission type, payer)	0.70 (0.58–0.84)	<.001	0.70
Adjusted for demographic characteristics and Charlson Comorbidity Index	0.73 (0.61–0.88)	<.001	0.71
Adjusted for demographic characteristics and APR–DRG risk index	0.68 (0.56–0.82)	<.001	0.86

Note: Excluding patients discharged or transferred to another acute care general hospital for inpatient care.

OR = odds ratio; CI = confidence interval; APR-DRG = All Patient Refined Diagnosis-Related Group.