| 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 | 0.260 × 10−3 ± 0.044 × 10−3 | P = 0.601 |
| F = 232.349 P = 0.000 |
| 生前0.5 h损伤组 | 0.467 × 10−3 ± 0.022 × 10−3 | P = 0.000 | P = 0.001 | |
| 生前1 h损伤组 | 0.848 × 10−3 ± 0.084 × 10−3 | P = 0.000 | P = 0.004 | |
| 生前2 h损伤组 | 1.424 × 10−3 ± 0.125 × 10−3 | P = 0.000 | P = 0.001 | |
| 生前4 h损伤组 | 1.947 × 10−3 ± 0.214 × 10−3 | P = 0.001 | P = 0.040 | |
| 生前8 h损伤组 | 2.241 × 10−3 ± 0.113 × 10−3 | P = 0.000 | P = 0.407 | |
| 正常对照组 | 0.198 × 10−3 ± 0.037 × 10−3 |
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