| 组别 | 平均光密度值 | t检验 | ||
| 切创创缘皮肤 | 自身空白对照皮肤 | t | P | |
| 生前15 min损伤组 | 0.265 × 10−3 ± 0.035 × 10−3 | 0.201 × 10−3 ± 0.015 × 10−3 | 3.759 | 0.006 |
| 生前0.5 h损伤组 | 0.476 × 10−3 ± 0.031 × 10−3 | 0.205 × 10−3 ± 0.018 × 10−3 | 17.090 | 0.000 |
| 生前1 h损伤组 | 0.807 × 10−3 ± 0.030 × 10−3 | 0.195 × 10−3 ± 0.021 × 10−3 | 37.655 | 0.000 |
| 生前2 h损伤组 | 1.500 × 10−3 ± 0.107 × 10−3 | 0.207 × 10−3 ± 0.016 × 10−3 | 26.711 | 0.000 |
| 生前4 h损伤组 | 1.857 × 10−3 ± 0.186 × 10−3 | 0.207 × 10−3 ± 0.019 × 10−3 | 19.722 | 0.000 |
| 生前8 h损伤组 | 2.242 × 10−3 ± 0.112 × 10−3 | 0.200 × 10−3 ± 0.018 × 10−3 | 40.082 | 0.000 |