Table 4.

Multivariable analysis of index admission and hospital-level predictors of 30-day readmission.

	Adjusted OR (95% CI)	P-value
INDEX ADMISSION CHARACTERISTICS
Admission Sourcea, n (%)
Emergency Department	0.97 (0.49-1.92)	0.93
Non-Emergency Department	1 [Reference]
Admission Type, n (%)
Elective	0.73 (0.45-1.19)	0.21
Non-Elective	1 [Reference]
APRDRG Severity Scalea, n (%)
Minor loss of function	1 [Reference]
Moderate loss of function	2.47 (0.89-6.85)	0.082
Major loss of function	1.90 (0.65-5.55)	0.24
Extreme loss of function	2.80 (0.64-12.3)	0.17
Length of Stay in Days, n (%)
≤ 2 days	1 [Reference]
3-4 days	0.95 (0.56-1.62)	0.85
5-6 days	1.87 (1.10-3.19)	0.02
≥ 7 days	1.23 (0.73-2.07)	0.44
Primary Payer type, n (%)
Medicaid	1 [Reference]
Medicare	1.45 (0.69-3.05)	0.33
Private	0.89 (0.36-2.23)	0.81
Self pay or No Charge or Others	0.53 (0.14-1.97)	0.35
Discharge Disposition
Routine	1 [Reference]
Skilled Nursing Facility	2.04 (0.95-4.38)	0.07
Home Health Care or AMA	1.10 (0.58-2.09)	0.77
HOSPITAL CHARACTERISTICS
Hospital bed sizea, n (%)
Large	1 [Reference]
Small	0.58 (0.21-1.56)	0.28
Medium	0.76 (0.48-1.21)	0.25
Hospital Typea, n (%)
Metropolitan teaching	1 [Reference]
Metropolitan non-teaching	0.83 (0.56-1.22)	0.34
Non-metropolitan hospital	0.27 (0.06-1.32)	0.11
Hospital Controla, n (%)
Government, Nonfederal	1 [Reference]
Private, Not for Profit	0.94 (0.57-1.56)	0.81
Private, For Profit	0.81 (0.38-1.74)	0.59

Abbreviations: AMA is “Against Medical Advice”

^aVariables defined by HCUP criteria.³²