| 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 | 0.260 × 10−3 ± 0.044 × 10−3 | 0.204 × 10−3 ± 0.016 × 10−3 | 2.706 | 0.027 |
| 生前0.5 h损伤组 | 0.467 × 10−3 ± 0.022 × 10−3 | 0.200 × 10−3 ± 0.017 × 10−3 | 20.977 | 0.000 |
| 生前1 h损伤组 | 0.848 × 10−3 ± 0.084 × 10−3 | 0.206 × 10−3 ± 0.016 × 10−3 | 16.888 | 0.000 |
| 生前2 h损伤组 | 1.424 × 10−3 ± 0.125 × 10−3 | 0.206 × 10−3 ± 0.017 × 10−3 | 21.684 | 0.000 |
| 生前4 h损伤组 | 1.947 × 10−3 ± 0.214 × 10−3 | 0.198 × 10−3 ± 0.012 × 10−3 | 18.226 | 0.000 |
| 生前8 h损伤组 | 2.241 × 10−3 ± 0.113 × 10−3 | 0.200 × 10−3 ± 0.013 × 10−3 | 40.050 | 0.000 |