. 2019 Oct 17;35(5):1550–1558. doi: 10.1007/s11606-019-05366-z

Table 4.

Studies with Readmissions as an Outcome

Reference	Data source and location	Number of patients	Study population	Definition of care fragmentation	Ottawa bias assessment	AOR/OR for rehospitalization
Jia 2007²²	Florida	1818	VA patients diagnosed with acute stroke	VHA + Medicare, VHA + Medicaid, Triple (VHA + Medicare and Medicaid)	Good	VHA + Medicare: AOR 1.5 (1.1–1.9) VHA + Medicaid: AOR 2.3 (1.2–4.5) Triple: AOR 13.6 (6.1–30.1)
Axon 2016³⁵	USA	13,977	Veterans with heart failure hospitalized at the VA or non-VA facilities, 2007–2011	Dual use	Good	AOR 1.93 (1.85–2.01)
Zheng 2016³¹	California (SID)	9233	Patients with major cancer surgery* readmitted within 30 days	Readmission to a different hospital than the one where the surgery was performed	Good	Adjusted for patient and hospital characteristics: 1.17 (1.03–1.34) Adjusted for patient characteristics: 1.16 (1.02–1/32)

Reference

Data source and location

Number of patients

Study population

Definition of care fragmentation

Ottawa bias assessment

AOR/OR for rehospitalization

Jia 2007²²

Florida

1818

VA patients diagnosed with acute stroke

VHA + Medicare, VHA + Medicaid, Triple (VHA + Medicare and Medicaid)

Good

VHA + Medicare: AOR 1.5 (1.1–1.9)

VHA + Medicaid:

AOR 2.3 (1.2–4.5)

Triple: AOR 13.6 (6.1–30.1)

Axon 2016³⁵

USA

13,977

Veterans with heart failure hospitalized at the VA or non-VA facilities, 2007–2011

Dual use

Good

AOR 1.93 (1.85–2.01)

Zheng 2016³¹

California (SID)

9233

Patients with major cancer surgery* readmitted within 30 days

Readmission to a different hospital than the one where the surgery was performed

Good

Adjusted for patient and hospital characteristics: 1.17 (1.03–1.34)

Adjusted for patient characteristics: 1.16 (1.02–1/32)

*Esophagectomy, gastrectomy, pancreatectomy, hepatectomy, proctectomy, lung resection