| 组别 | 平均光密度值 | 与正常对照组比较 | 损伤组相邻组与上组比较 | 损伤组间比较 |
| 生前15 min损伤组 | 0.300 × 10−3 ± 0.031 × 10−3 | P = 0.025 |
| F = 284.982 P = 0.000 |
| 生前0.5 h损伤组 | 0.501 × 10−3 ± 0.009 × 10−3 | P = 0.000 | P = 0.001 | |
| 生前1 h损伤组 | 0.914 × 10−3 ± 0.089 × 10−3 | P = 0.001 | P = 0.007 | |
| 生前2 h损伤组 | 1.476 × 10−3 ± 0.082 × 10−3 | P = 0.000 | P = 0.000 | |
| 生前4 h损伤组 | 1.868 × 10−3 ± 0.115 × 10−3 | P = 0.000 | P = 0.006 | |
| 生前8 h损伤组 | 2.252 × 10−3 ± 0.185 × 10−3 | P = 0.000 | P = 0.089 | |
| 正常对照组 | 0.196 × 10−3 ± 0.007 × 10−3 |
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