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Postoperative data in the two groups
| Group | Cases | Admission to ICU | Stay in hospital after operation (day) | Vein thrombosis of lower limbs |
|---|---|---|---|---|
| A | 230 | 1.30 (3/230) | 5.1 ± 0.8 | 0.87 (2/230) |
| B | 38 | 13.15 (5/38) | 6.7 ± 1.0 | 0 |
| t test | – | 11.994 | 4.571 | – |
| P value | – | 0.001 | 0.000 | 1.000 |
