| 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 | 0.297 × 10−3 ± 0.028 × 10−3 | P = 0.176 |
| F = 199.445 P = 0.000 |
| 生前0.5 h损伤组 | 0.464 × 10−3 ± 0.030 × 10−3 | P = 0.001 | P = 0.000 | |
| 生前1 h损伤组 | 0.881 × 10−3 ± 0.052 × 10−3 | P = 0.000 | P = 0.000 | |
| 生前2 h损伤组 | 1.397 × 10−3 ± 0.193 × 10−3 | P = 0.002 | P = 0.044 | |
| 生前4 h损伤组 | 1.822 × 10−3 ± 0.129 × 10−3 | P = 0.000 | P = 0.068 | |
| 生前8 h损伤组 | 2.292 × 10−3 ± 0.185 × 10−3 | P = 0.000 | P = 0.032 | |
| 正常对照组 | 0.198 × 10−3 ± 0.052 × 10−3 |
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