Table 3.
Spearman correlation coefficients between outcomes, volumes and rating systems
| Mortality | P-value | Complications | P-value | LoS | P-value | COS | P-value | Volume | P-value | |
|---|---|---|---|---|---|---|---|---|---|---|
| Volume | 0.24 | 0.480 | 0.26 | 0.433 | 0.47 | 0.141 | 0.39 | 0.232 | – | – |
| USN | 0.41 | 0.207 | 0.44 | 0.180 | 0.61 | 0.046 | 0.54 | 0.087 | 0.90 | 0.0002 |
| CR | −0.49 | 0.129 | −0.32 | 0.340 | −0.34 | 0.313 | −0.41 | 0.209 | −0.29 | 0.386 |
| HC | 0.42 | 0.195 | 0.26 | 0.449 | 0.38 | 0.246 | 0.35 | 0.288 | 0.21 | 0.545 |
| Healthgrades | 0.50 | 0.118 | 0.37 | 0.267 | 0.31 | 0.350 | 0.44 | 0.176 | 0.34 | 0.301 |
LoS, length of stay; COS, composite outcomes score; USN, US News & World Report; CR, Consumer Reports; HC, Hospital Compare.