| 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 | 0.297 × 10−3 ± 0.028 × 10−3 | 0.207 × 10−3 ± 0.014 × 10−3 | 6.536 | 0.027 |
| 生前0.5 h损伤组 | 0.464 × 10−3 ± 0.030 × 10−3 | 0.214 × 10−3 ± 0.017 × 10−3 | 16.476 | 0.000 |
| 生前1 h损伤组 | 0.881 × 10−3 ± 0.052 × 10−3 | 0.203 × 10−3 ± 0.024 × 10−3 | 26.053 | 0.000 |
| 生前2 h损伤组 | 1.397 × 10−3 ± 0.193 × 10−3 | 0.208 × 10−3 ± 0.023 × 10−3 | 13.641 | 0.000 |
| 生前4 h损伤组 | 1.822 × 10−3 ± 0.129 × 10−3 | 0.198 × 10−3 ± 0.052 × 10−3 | 26.132 | 0.000 |
| 生前8 h损伤组 | 2.292 × 10−3 ± 0.185 × 10−3 | 0.206 × 10−3 ± 0.020 × 10−3 | 25.082 | 0.000 |