| 组别 | 样本量 | 出血量(mL) | |||||
| <100 | ≥100 | ≥200 | ≥300 | ≥400 | ≥500 | ||
| 实验组 | 52 | 2 (3.85) | 43 (82.69) | 5 (9.62) | 2 (3.85) | 0 (0.00) | 0 (0.00) |
| 对照组 | 59 | 0 (0.00) | 25 (48.08) | 9 (17.31) | 21 (40.38) | 3 (5.77) | 1 (1.92) |