Table 2.

Unadjusted probability of readmission or death within 30 days after hospital discharge by patient characteristic, stratified by sex

Characteristic	Men		Women
	Readmission, %	Death, %	Readmission, %	Death, %
Probability	33.0	2.9	35.3	2.5
Age, yra
18–34	42.0	0.7	47.6	0.7
35–44	35.0	1.2	43.2	1.1
45–54	35.0	1.4	37.2	1.4
55–64	32.6	2.1	34.7	1.9
65–74	31.6	3.3	33.1	2.7
≥75	30.5	5.6	31.8	4.4
Race/ethnicity
Asian	28.8	2.5	30.5	2.0
Black	34.1	1.9	37.2	1.8
White	33.2	3.9	34.9	3.4
Hispanic	31.3	2.0	33.0	1.8
Other	30.2	2.2	32.2	1.9
Prior hospitalizations
0	25.1	1.7	26.7	1.5
1–3	30.6	3.1	32.3	2.7
4–8	38.4	3.7	38.8	3.1
9+	51.6	3.0	52.6	2.3
Primary insurance
Medicare	33.1	3.3	35.2	2.8
Medicaid	36.3	1.8	39.1	1.8
Other	32.0	2.5	34.6	2.0
Charlson comorbidity index
<4	35.2	1.3	39.0	1.2
4–5	32.4	2.4	35.2	2.2
6–7	32.2	3.8	33.6	3.0
>7	33.2	4.7	34.9	3.8
Congestive heart failure
No	31.4	3.4	33.7	3.0
Yes	34.5	2.3	36.8	2.0
Diabetes mellitus
No	31.6	3.2	34.1	2.9
Yes	33.6	2.7	35.8	2.3
Myocardial infarction
No	32.5	2.9	34.8	2.5
Yes	34.7	2.7	37.4	2.2
Other cardiovascular comorbidity
No	32.5	2.9	34.8	2.5
Yes	34.7	2.9	37.4	2.5
Geographic region
Northeast	33.4	2.9	34.9	2.5
Midwest	35.0	2.9	37.6	2.5
South	32.8	2.8	35.6	2.3
West	31.1	2.8	32.6	2.4
Year of incidence
2007	32.6	3.0	34.7	2.4
2008	33.2	2.9	35.4	2.5
2009	33.0	2.9	36.0	2.5
2010	33.5	2.9	35.7	2.5
2011	32.6	2.1	34.7	2.1

^aAt discharge.