| All participants | Placebo group | Low-dose group | High-dose group | F/χ2 | p value |
---|---|---|---|---|---|---|
Age (years) | 28.04 ± 3.39 | 28.01 ± 3.82 | 28.34 ± 3.05 | 27.79 ± 3.34 | 0.197 | 0.821 |
Age group | ||||||
 21–27 | 45 (50.0) | 17 (56.7) | 12 (40.0) | 16 (53.3) | 1.867 | 0.500 |
 28–35 | 45 (50.0) | 13 (43.3) | 18 (60.0) | 14 (46.7) |  |  |
Gestation (week) | 39.47 ± 1.10 | 39.50 ± 1.07 | 39.30 ± 1.25 | 39.61 ± 0.97 | 0.603 | 0.550 |
Gestation group | ||||||
 37–39 week | 59 (65.6) | 20 (66.7) | 20 (66.7) | 19 (63.3) | 0.098 | 0.999 |
 40–42 week | 31 (34.4) | 10 (33.3) | 10 (33.3) | 11 (36.7) |  |  |
Operation time (min) | 39.20 ± 10.45 | 39.17 ± 12.48 | 38.48 ± 7.87 | 39.93 ± 10.81 | 0.137 | 0.873 |
Incision length (cm) | 14.53 ± 1.07 | 14.36 ± 1.23 | 14.73 ± 0.93 | 14.52 ± 1.05 | 0.881 | 0.418 |
Pigmentation | 165.37 ± 73.15 | 167.99 ± 69.86 | 160.07 ± 81.14 | 168.13 ± 70.00 | 0.116 | 0.890 |
Erythema | 265.43 ± 77.03 | 264.43 ± 77.75 | 271.99 ± 84.63 | 259.69 ± 69.93 | 0.188 | 0.829 |