Table 2.

Thirty-day readmission rates: pre-intervention and post-intervention periods* for all patients by HF and control groups

Patient type		Pre-intervention (%)	Post-intervention (%)	Difference (95% CI)	p Value	Adjusted OR† (95% CI)	p Value
HF	All	26.2	21.2	5.0 (1.0 to 9.0)	0.01	0.73 (0.58 to 0.93)	<0.01
AMI and PNA	All	15.5	16.7	−1.2 (−5.4 to 2.9)	0.56	1.09 (0.80 to 1.48)	0.60

*Pre-intervention period: December 2008 to November 2009; post-intervention period: December 2009 to November 2010.

†The risk adjustment model includes demographic variables (age, race and sex), case mix variables and indicator variables for the pre- and post-intervention periods. For HF, the case mix variable was the e-Model. For AMI and PNA, the Tabak mortality score for AMI and PNA was used.

AMI, acute myocardial infarction; HF, heart failure; PNA, pneumonia.