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Stratification of morbidity according to PREPARE score .
| Prepare score value | Number of patients | Major morbidity (predicted) | Major morbidity (observed) | O:P ratio |
|---|---|---|---|---|
| ≤2 | 102 (47.2%) | 11.7% | 5.9% | 0.504 |
| 3–4 | 69 (31.9%) | 20.7% | 14.5% | 0.700 |
| 5–6 | 30 (13.9%) | 30.2% | 16.7% | 0.553 |
| ≥7 | 15 (6.9%) | 49.7% | 33.3% | 0.670 |
Qualitative data are expressed as n (%). O:P ratio, observed: predicted ratio.
