Table 3.

Age (by Sex), Severity and Discharge Location for Adjusted 30-, 60- and 90-Day Hospital Readmission.

Patient characteristic	30-day readmission	60-day readmission	90-day readmission
	OR(95%CI)*	OR(95%CI)	OR(95%CI)
Demographic characteristics
Age Group (years)
Male
Four groups
18–40	Ref.	Ref.	Ref.
41–65	2.11(1.83, 2.43)	2.15(1.89, 2.46)	2.19(1.94, 2.46)
66–75	2.07(1.73, 2.47)	2.16(1.85, 2.52)	2.09(1.81, 2.42)
76+	2.24(1.90, 2.63)	2.28(1.95, 2.67)	2.32(2.01, 2.69)
Two groups
18–40	Ref.	Ref.	Ref.
41+	2.17(1.90, 2.48)	2.22(1.97, 2.50)	2.31(2.08, 2.57)
Female
Four groups
18–40	Ref.	Ref.	Ref.
41–65	1.48(1.15, 1.90)	1.47(1.15, 1.89)	1.65(1.33, 2.06)
66–75	1.54(1.17, 2.02)	1.59(1.22, 2.08)	1.71(1.36, 2.15)
76+	1.69(1.32, 2.17)	1.76(1.37, 2.26)	1.96(1.59, 2.43)
Two groups
18–40	Ref.	Ref.	Ref.
41+	1.54(1.22, 1.94)	1.51(1.21, 1.89)	1.68(1.36, 2.08)
Severity of Injury
Minor	Ref.	Ref.	Ref.
Moderate	1.16(1.07, 1.27)	1.25(1.16, 1.35)	1.30(1.20, 1.40)
Major	1.40(1.25, 1.56)	1.42(1.28, 1.58)	1.43(1.29, 1.59)
Extreme	1.21(1.04, 1.41)	1.22(1.06, 1.40)	1.29(1.11, 1.48)
Discharge Destination
SNF, ICF	Ref.	Ref.	Ref.
Home Health	1.08(0.96, 1.21)	0.97(0.99, 1.07)	0.95(0.86, 1.06)
Home	0.79(0.71, 0.87)	0.74(0.68, 0.80)	0.74(0.68, 0.80)
Teaching Status
Teaching-Metropolitan	Ref.	Ref.	Ref.
Non-Teaching-Metropolitan	1.00(0.91, 1.10)	0.99(0.92, 1.07)	0.97(0.90, 1.05)
Non-Teaching-Rural	0.78(0.62, 1.00)	0.71(0.57, 0.88)	0.74(0.61, 0.91)

^*Adjusted for all covariates listed in Table 1 (sex, admission type, emergency room use, primary insurance payer, Elixhauser comorbidity score, county of residence, income, hospital ownership, hospital teaching status, hospital bed size, and hospital volume).

OR, odds ratio; CI, confidence interval; SNF, skilled nursing facility; ICF, intermediate care facility.