Table 3.
LOS and CDI Incidence Rates by Hospital CDI Decile (Weighted Average)
| CDI decile | 2009
|
2010
|
2011
|
|||
|---|---|---|---|---|---|---|
| LOS | CDI rate | LOS | CDI rate | LOS | CDI rate | |
| 1 | 3.511 | .003 | 3.499 | .028 | 3.487 | .030 |
| 2 | 4.019 | .181 | 3.912 | .204 | 4.138 | .263 |
| 3 | 4.118 | .342 | 4.083 | .378 | 4.045 | .431 |
| 4 | 4.186 | .470 | 4.323 | .502 | 4.156 | .567 |
| 5 | 4.362 | .578 | 4.505 | .623 | 4.439 | .692 |
| 6 | 4.553 | .711 | 4.681 | .759 | 4.426 | .846 |
| 7 | 4.502 | .836 | 4.694 | .924 | 4.438 | 1.018 |
| 8 | 4.634 | 1.029 | 4.562 | 1.106 | 4.491 | 1.231 |
| 9 | 4.605 | 1.360 | 4.624 | 1.455 | 4.898 | 1.583 |
| 10 | 6.280 | 2.559 | 6.722 | 2.803 | 6.002 | 2.880 |
| ρ | .6709 | .8243 | .7551 | |||
| P value | <.001 | <.001 | <.001 | |||
Note. CDI, Clostridium difficile infection; LOS, length of stay. LOS is calculated as the average patient LOS across all patients without CDI for hospitals in a given decile. CDI rates are calculated as weighted averages across hospitals in a given decile, weighted by each hospital’s total number of discharges. The correlation coefficient and P values correspond to the correlation between each hospital’s average LOS and CDI incidence.