5.
改良POSSUM预测与实际手术死亡的例数对比
The comparison between predicted and actual death cases
| R2 (%) | n | Average R2 (%) | Predicted | Actual | O/E |
| R2: mortality rate. | |||||
| 0-10 | 119 | 3.4±2.33 | 4 | 1 | 0.25 |
| 11-20 | 11 | 14.1±1.78 | 1 | 0 | 0 |
| 21-30 | 8 | 23.6±3.21 | 2 | 1 | 0.50 |
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