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. Author manuscript; available in PMC: 2011 Dec 7.
Published in final edited form as: Ann Intern Med. 2010 Dec 7;153(11):718–727. doi: 10.1059/0003-4819-153-11-201012070-00005

Table 5.

30-Day Mortality from the Date of Rehospitalization by Same or Different Rehospitalization Facility, Overall and Stratified by Index Hospital For-Profit Status (N = 74,564)

Characteristic 30-Day Mortality
Adjusted* Risk Ratio (95% CI) P-Value Predicted* Probability (95% CI)
OVERALL MODEL
 Rehospitalized in same facility 1.00 (Reference) 12.7 (12.5, 13.0)
 Rehospitalized in different facility 1.01 (0.96, 1.06) 0.68 12.9 (12.3, 13.4)
STRATIFIED MODELS
Not-for-profit/Public index hospital patients only
 Rehospitalized in same facility 1.00 (Reference) 12.9 (12.6, 13.1)
 Rehospitalized in different facility 1.01 (0.96, 1.06) 0.77 13.0 (12.4, 13.5)
For-profit index hospital patients only
 Rehospitalized in same facility 1.00 (Reference) 12.1 (11.4, 12.8)
 Rehospitalized in different facility 1.01 (0.90, 1.13) 0.81 12.3 (11.1, 13.5)

Abbreviation: CI=Confidence interval

*

Logistic regression models producing adjusted risk ratios (using methods by Kleinman et al.) and adjusted predicted probabilities for death within 30 days of rehospitalization by rehospitalization facility (same or different), overall and by index hospital for-profit status controlled for patient characteristics of age, gender, race, Medicaid and disability status, comorbidities (hypertension, fluid and electrolyte disorders, congestive heart failure, chronic pulmonary disease, deficiency anemias, diabetes-uncomplicated, valvular disease, hypothyroidism, peripheral vascular disorders, cardiac arrythmias, and an indicator denoting the presence of other comorbidity), index hospital length of stay and Center for Medicare and Medicaid Service’s Hierarchical Condition Category Score; and Index hospital characteristics of annual discharge number, teaching status, for-profit status (omitted in stratified models), billing region and rural-urban community area code.