Table 1.

Patient Demographics and Hospital Characteristics

Variables	30-Day Readmission (n = 2193)	31- to 90-Day Readmission (n = 913)	Non-R (n = 11,249)
Age (years)
Mean ± SD	72.7 ± 14.4	72.3 ± 15.0	70.3 ± 16.0
Median [IQR]	76 [66–83]	75 [66–83]	74 [62–82]
Female (%)	32.2	30.8	33.5
Median household income percentile (%)
0–25th	25.1	25.5	23.3
26–50th	25.3	23.1	27.7
51–75th	26.9	29.4	25.5
76–100th	22.2	21.1	22.7
Primary expected payer (%)
Medicare	76.5	76.9	66.7
Medicaid	5.4	6.1	6.1
Private insurance	13.9	13.1	18.8
Other	4.1	3.9	8.4
Teaching status of hospitals (%)
Metropolitan nonteaching	22.7	22.4	21.2
Metropolitan teaching	75.6	75.9	77.0
Nonmetropolitan hospital	1.6	1.7	1.8
Hospital bed size (%)
Small	4.8	4.7	5.7
Medium	22.3	24.2	22.9
Large	72.9	71.1	71.4

SD, standard deviation; IQR, interquartile range.

Signifies that the count number is <10 and cannot be reported.