Table 3.

Multiple logistic regression model results for 30-day readmission, including adherence

Association	HOSPITAL model with adherence				HOSPITAL model
	Estimate	95% confidence limits		P-valuea	Estimate	95% confidence limits		P-valuea
		Lower limit	Upper limit			Lower limit	Upper limit
Hemoglobin level at discharge (<12 g/dL)	1.336	0.635	2.810	0.445	1.343	0.643	2.804	0.432
Discharge from an oncology service	2.219	1.078	4.566	0.031	2.210	1.086	4.494	0.029
Sodium level at discharge (<135 mEq/L)	1.646	0.807	3.359	0.171	1.764	0.872	3.567	0.114
Procedure during hospital stay (any ICD-9-CM-coded procedure)	1.098	0.579	2.082	0.773	1.130	0.601	2.127	0.704
Index admission type: nonelective	3.383	0.946	12.107	0.061	3.294	0.925	11.732	0.066
Hospital admissions during the previous year	0.676	0.295	1.551	0.356	0.721	0.317	1.636	0.433
Length of stay ≥5 days	1.974	1.062	3.669	0.032	1.838	0.996	3.393	0.052
Medication adherence (low/intermediate vs high)	2.545	1.323	4.902	0.005

Notes: c-statistic =0.70 and 0.65 for the models with and without medication adherence, respectively.

^aWald chi-square test.