Skip to main content
. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Surgery. 2016 Jan 28;159(5):1461–1468. doi: 10.1016/j.surg.2015.12.012

Table 2.

The impact of Hospital-SNF linkage on 30-day readmission rates following linear regression (OLS) and Instrumental Variables (IV) analysis*.

Variables OLS (SE) P-value IV (SE) P-value
Proportion of
patients
discharged to the
SNF 		−0.04 (0.0083) <0.001 −0.060 (0.031) 0.047
Proportion of
patients with
Medicaid as a
payer 		0.0002
(0.0001)		 0.002 0.0002
(0.0001)		 0.008
Age 0.002 (0.0001) <0.001 0.002 (0.0001) <0.001
Elixhauser
score>2 		0.006(0.001) <0.001 0.006(0.001) <0.001
Deyo score>2 0.014 (0.001) <0.001 0.014 (0.001) <0.001
Female −0.024 (0.002) <0.001 −0.024 (0.002) <0.001
Hospital Length
of Stay 		0.006 (0.001) <0.001 0.006 (0.001) <0.001
*

- Only variables found to be statistically significant in linear regression analysis are presented. The insignificant variables we dropped are: no. of beds in a SNF, whether a SNF is multifunctional, for-profit, extension of any MD, a hospital’s own SNF or hospital-based SNF, a SNF’s average deficiency score, no. of registered nurses, licensed practical nurses, and certified nursing assistants; and patients’ age, race and gender.