Table 4.
Observed to expected FTR by center case volume quartile
| Center Case Volume Quartile |
Observed : Expected FTR | p-trend |
|---|---|---|
| Low Volume | 7.61 (18.8/2.5) | 0.04 |
| Medium Volume | 6.31 (15.4/2.4) | |
| High Volume | 4.48 (14.3/3.2) | |
| Very High Volume | 4.34 (12.2/2.8) |
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