Table 3.
Interrupted Time Series Analysis for the Difference Between Penalty and Non-penalty Hospitals. Results represent the difference in the annualized percentage rate of change in readmission rates during each specified time interval or the additional absolute change, relative to previous trend, at specific time points for penalty hospitals relative to non-penalty hospitals.
| Condition | Pre-HRRP Announcement (January 2008 – March 2010) | HRRP Announcement (March 2010) | Post-HRRP Announcement, Pre-HRRP Implementation (April 2010–September 2012) | HRRP Implementation (October 2012) | Post HRRP Implementation (October 2012–June 2015) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Difference in annualized rate of change* (95% CI) | p-value | Difference in additional absolute change* (95% CI) | p-value | Difference in annualized rate of change* (95% CI) | p-value | Difference in additional absolute change* (95% CI) | p-value | Difference in annualized rate of change* (95% CI) | p-value | |
| AMI | 0.72 (0.26, 1.19) | 0.003 | −0.79 (−1.58, 0.00) | 0.051 | −1.24 (−1.84, −0.65) | <0.001 | 0.01 (−0.75, 0.77) | 0.971 | 0.21 (−0.29, 0.70) | 0.406 |
|
| ||||||||||
| Heart failure | 0.35 (0.04, 0.65) | 0.027 | 0.26 (−0.26, 0.78) | 0.321 | −1.25 (−1.64, −0.86) | <0.001 | 0.06 (−0.44, 0.56) | 0.806 | 0.76 (0.43, 1.08) | <0.001 |
|
| ||||||||||
| Pneumonia | 0.48 (0.15, 0.81) | 0.005 | 0.35 (−0.22, 0.92) | 0.223 | −1.37 (−1.80, −0.95) | <0.001 | 0.03 (−0.51, 0.57) | 0.914 | 0.75 (0.40, 1.11) | <0.001 |
|
| ||||||||||
| Non-Target Conditions# | −0.01 (−0.09, 0.07) | 0.828 | 0.12 (−0.02, 0.26) | 0.091 | −0.27 (−0.38, −0.17) | <0.001 | −0.06 (−0.19, 0.07) | 0.368 | 0.18 (0.10, 0.27) | <0.001 |
*
For patients at penalty hospitals relative to non-penalty hospitals
#
Excludes acute myocardial infarction, heart failure, pneumonia, chronic obstructive pulmonary disease, and hip and knee arthroplasty surgery.