| 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 | 0.265 × 10−3 ± 0.035 × 10−3 | P = 0.154 |
| F = 306.520 P = 0.000 |
| 生前0.5 h损伤组 | 0.476 × 10−3 ± 0.031 × 10−3 | P = 0.000 | P = 0.000 | |
| 生前1 h损伤组 | 0.807 × 10−3 ± 0.030 × 10−3 | P = 0.000 | P = 0.000 | |
| 生前2 h损伤组 | 1.500 × 10−3 ± 0.107 × 10−3 | P = 0.000 | P = 0.001 | |
| 生前4 h损伤组 | 1.857 × 10−3 ± 0.186 × 10−3 | P = 0.001 | P = 0.124 | |
| 生前8 h损伤组 | 2.242 × 10−3 ± 0.112 × 10−3 | P = 0.000 | P = 0.089 | |
| 正常对照组 | 0.195 × 10−3 ± 0.017 × 10−3 |
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