Multi-level models for heart failure patients’ 30-day mortality and readmission rates: the relation between patient and hospital factors in administrative data

Table 3 Hierarchical logistic model for 30-day readmissions

Variable	Estimate	Standard Error	P-value	Odds Ratio	95% Confidence
Intercept	−2.34	0.02	<.0001	–	–
Age (5 years)	0.06	0.008	<.0001	1.07	1.05–108
Length of Stay (5 days)	0.12	0.009	<.0001	1.12	1.10–1.14
Comorbidity weight	0.09	0.01	<.0001	1.10	1.08–1.12
Number of previous admissions	0.24	0.02	<.0001	1.27	1.22–1.32
Hospital mean length of stay	−0.04	0.009	<.0001	0.96	0.95–0.98
Admission ward
IC or CIC^a vs. Cardiac	−0.35	0.04	<.0001	1.55	1.39–1.72
Other vs. Cardiac	0.09	0.05	0.065	1.42	1.31–1.54

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