Table 1.

Demographics and outcomes of women with 60 day postpartum readmissions

Readmission hospital	Same hospital as delivery		Different hospital than delivery		P value
	N	%	N	%
Severe maternal morbidity (readmission)	19,636	17.5%	6,465	32.4%	<0.01
Prolonged length of stay	10,671	8.9%	2,930	13.4%	<0.01
High readmission costs	10,069	8.4%	3,248	14.9%	<0.01
Maternal age in years
15–19 years old	10,519	8.8%	2,034	9.3%	<0.01
20–24 years old	25,935	21.7%	5,631	25.8%
25–29 years old	31,235	26.1%	5,760	26.4%
30–34 years old	29,338	24.6%	4,872	22.4%
35–39 years old	16,968	14.2%	2,664	12.2%
40–54 years old	5,492	4.6%	828	3.8%
Payer
Medicare	1,433	1.2%	398	1.8%	<0.01
Medicaid	58,616	49.1%	12,325	56.6%
Private insurance	53,992	45.2%	8,096	37.2%
Self-pay	1,501	1.3%	284	1.3%
No charge	64	0.1%	18	0.1%
Other	3,473	2.9%	595	2.7%
Missing	409	0.3%	71	0.3%
Median ZIP code income quartile
Lowest income quartile	39,124	32.7%	7,516	34.5%	<0.01
2nd lowest quartile	29,097	24.4%	5,548	25.5%
2nd highest quartile	27,802	23.3%	4,779	21.9%
Highest income quartile	22,218	18.6%	3,712	17.0%
Delivery postpartum hemorrhage	6,635	5.6%	1,261	5.8%	0.47
Cesarean delivery	62,186	52.0%	10,559	48.5%	<0.01
Pregestational diabetes	2,954	2.5%	564	2.6%	0.37
Gestational diabetes	10,199	8.5%	1,755	8.1%	<0.01
Systemic lupus erythematosus	455	0.4%	129	0.6%	0.01
Multiple gestation	4,909	4.1%	739	3.4%	<0.01
Asthma	7,213	6.0%	1,276	5.9%	0.58
Chronic kidney disease	887	0.7%	243	1.1%	<0.01
Hypertensive diseases of pregnancy	25,519	21.4%	3,873	17.8%	<0.01
Chronic hypertension	5,596	4.7%	885	4.1%	<0.01
Hospital bed size
Small	11,096	9.3%	2,646	12.2%	<0.01
Medium	30,206	25.3%	5,825	26.7%
Large	78,186	65.4%	13,316	61.1%
Hospital teaching status
Metropolitan non-teaching	38,869	32.5%	7,879	36.2%	<0.01
Metropolitan teaching	68,496	57.3%	11,682	53.6%
Non-metropolitan	12,123	10.2%	2,227	10.2%

Hypertensive disease of pregnancy include gestational hypertension and preeclampsia diagnoses.