Thirty-day readmission in patients with heart failure with preserved ejection fraction: Insights from the nationwide readmission database

Table 1 Baseline characteristics of patients admitted with heart failure with preserved ejection fraction

Variable	n (%)
Total number of index admissions	60514
Female	37156 (61.4)
Mean age in year (Confidence interval)	74.8 (74.52-75.1)
Charlson comorbidity index score
0	0
1	8956 (14.8)
2	15613 (25.8)
≥ 3	35945 (59.4)
Median income in patient zip code, US dollars
1-43999	16823 (27.8)
44000-55999	18275 (30.2)
56000-73999	15007 (24.8)
74000+	10408 (17.2)
Patient residence
Large metropolitan areas with at least 1 million residents	27836 (46.0)
Small metropolitan areas with less than 1 million residents	22753 (37.6)
Micropolitan areas 18493 (9.1)	7201 (11.9)
Not metropolitan or micropolitan (non-urban residents)	2723 (4.5)
Insurance type
Medicare	49864 (82.4)
Medicaid	4054 (6.7)
Private	5809 (9.6)
Self-pay	726 (1.2)
Rehab transfer	59 (0.098)
Hospital teaching status
Non-teaching	24871 (41.1)
Teaching	35643 (58.9)