Table 2. Mean RSRRs by State.
| Characteristic | State, Mean (SD) RSRR | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| New York | Florida | Iowa | Washington | |||||||||
| Non-SNH | SNH | P Value | Non-SNH | SNH | P Value | Non-SNH | SNH | P Value | Non-SNH | SNH | P Value | |
| Overall | 9.6 (0.1) | 10.9 (0.1) | <.001a | 11.6 (0.1) | 12.1 (0.1) | .001a | 8.7 (0.1) | 8.8 (0.1) | .44 | 9.0 (0.1) | 8.8 (0.1) | .46 |
| Teaching status | ||||||||||||
| Yes | 9.8 (0.3) | 10.5 (0.2) | .054 | 14.3 (0.7) | 11.7 (0.4) | <.001a | NA | 8.6 (0.4) | NA | NA | 8.4 (0.4) | NA |
| No | 9.6 (0.1) | 11.2 (0.2) | 11.6 (0.1) | 12.2 (0.1) | 8.7 (0.1) | 8.8 (0.1) | 9.0 (0.1) | 8.9 (0.1) | ||||
| Ownership | ||||||||||||
| Nonfederal government | 9.2 (0.4) | 11.9 (0.2) | <.001a | 11.5 (0.3) | 12.2 (0.3) | .001a | 8.8 (0.1) | 8.6 (0.3) | .14 | 9.0 (0.1) | 8.9 (0.3) | .98 |
| Not-for-profit private | 9.6 (0.1) | 10.4 (0.2) | 11.3 (0.1) | 11.2 (0.2) | 8.5 (0.1) | 8.9 (0.1) | 8.8 (0.1) | 8.8 (0.2) | ||||
| For-profit private | NA | NA | 11.9 (0.1) | 13.1 (0.2) | NA | 7.4 (0.6) | 9.5 (0.2) | 9.5 (0.6) | ||||
| Size, No. of beds | ||||||||||||
| <200 | 9.5 (0.1) | NA | .006a | 11.6 (0.1) | 13.6 (0.4) | .13 | 8.7 (0.2) | 8.7 (0.2) | .82 | 9.0 (0.1) | 8.7 (0.2) | .76 |
| 200-399 | 9.7 (0.2) | 12.0 (0.4) | 11.9 (0.2) | 13.2 (0.4) | NA | 9.2 (0.2) | 9.0 (0.3) | 9.0 (0.2) | ||||
| 300-499 | 9.7 (0.2) | 11.4 (0.3) | 11.2 (0.3) | 12.1 (0.2) | 8.7 (1.2) | 8.4 (0.3) | 8.8 (0.6) | 9.0 (0.2) | ||||
| ≥500 | 10.1 (0.4) | 10.5 (0.2) | NA | 11.5 (0.2) | NA | 8.8 (0.4) | NA | 8.4 (0.4) | ||||
| Location | ||||||||||||
| Metropolitan | 9.7 (0.1) | 10.9 (0.1) | NA | 11.6 (0.1) | 12.1 (0.13) | NA | 8.5 (0.2) | 8.92 (0.14) | .04a | 9.1 (0.1) | 8.85 (0.13) | NA |
| Micropolitan | 9.6 (0.2) | NA | 11.6 (0.3) | NA | 8.9 (0.2) | 8.52 (0.19) | 8.6 (0.2) | NA | ||||
| Rural | 9.1 (0.4) | NA | 11.8 (0.4) | NA | 8.7 (0.1) | NA | 9.1 (0.2) | NA | ||||
| Ambulatory surgery center | ||||||||||||
| Yes | 9.7 (0.1) | 11.0 (0.2) | .44 | 11.6 (0.2) | 11.2 (0.2) | .002a | 8.5 (0.2) | 8.8 (0.2) | .29 | 9.2 (0.2) | 8.4 (0.2) | .002a |
| No | 9.5 (0.2) | 10.3 (0.5) | 11.5 (0.1) | 12.2 (0.2) | 8.7 (0.1) | 8.8 (0.1) | 8.8 (0.1) | 9.2 (0.2) | ||||
| Cardiac intervention capability | ||||||||||||
| Cardiac surgery | 9.7 (0.2) | 10.4 (0.2) | .001a | 12.2 (0.2) | 11.8 (0.2) | <.001a | NA | 9.1 (0.2) | .40 | 9.4 (0.3) | 8.9 (0.2) | .89 |
| Cardiac catheterization | 9.2 (0.3) | 10.6 (0.4) | 11.1 (0.2) | 9.8 (0.5) | 8.7 (1.2) | 8.2 (0.2) | 9.2 (0.2) | 8.8 (0.2) | ||||
| Neither | 9.7 (0.1) | 12.0 (0.3) | 11.4 (0.1) | 12.8 (0.4) | 8.7 (0.1) | 9.2 (0.3) | 8.8 (0.1) | 8.6 (0.4) | ||||
| Nurse staffing ratio quartile | ||||||||||||
| First | 9.8 (0.2) | 11.0 (0.4) | .34 | 11.7 (0.2) | 12.9 (0.3) | .02a | 8.7 (0.1) | 9.3 (0.2) | .12 | 9.3 (0.2) | 8.9 (0.2) | .44 |
| Second | 9.7 (0.2) | 11.0 (0.2) | 11.4 (0.2) | 12.0 (0.24) | 8.8 (0.2) | 8.6 (0.2) | 9.2 (0.2) | 8.9 (0.2) | ||||
| Third | 9.3 (0.2) | 11.0 (0.2) | 11.9 (0.2) | 12.0 (0.3) | 8.5 (0.1) | 8.6 (0.2) | 8.8 (0.2) | 8.8 (0.3) | ||||
| Fourth | 9.7 (0.2) | 10.5 (0.4) | 11.6 (0.2) | 11.5 (0.3) | 8.7 (0.1) | 9.5 (0.6) | 8.8 (0.1) | 7.3 (0.9) | ||||
| Surgery volume quartile | ||||||||||||
| First | 10.0 (0.2) | 10.5 (0.9) | .01a | 11.5 (0.1) | 15.6 (1.1) | <.001a | 8.6 (0.1) | NA | .47 | 8.9 (0.1) | NA | .91 |
| Second | 9.3 (0.2) | 11.2 (0.3) | 11.8 (0.2) | 12.4 (0.4) | 8.7 (0.1) | NA | 8.8 (0.1) | 8.3 (0.6) | ||||
| Third | 9.7 (0.2) | 11.7 (0.3) | 11.5 (0.2) | 13.0 (0.3) | 8.8 (0.2) | 9.1 (0.2) | 9.4 (0.2) | 9.0 (0.2) | ||||
| Fourth | 9.3 (0.2) | 10.4 (0.2) | 12.0 (0.3) | 11.6 (0.2) | 8.6 (0.3) | 8.6 (0.1) | 9.0 (0.3) | 8.8 (0.2) | ||||
Abbreviations: NA, not applicable; RSRR, risk-standardized readmission rate; SNH, safety-net hospital.
a
Significance defined as P < .05 using paired, 2-tailed t tests.