Table 5. Factors Associated With the Improvement of VSS and Scar Thickness Before and After Treatment .
| Improvement of VSS | Decrease of Scar Thickness | |||||
|---|---|---|---|---|---|---|
| Beta | 95% CI | P Value | Beta | 95% CI | P Value | |
| Age of scar | ||||||
| < 1 year | 0 | Ref | Ref | 0 | Ref | Ref |
| 1-3 years | 0.12 | -1.26, 1.49 | 0.866 | 0.39 | -0.10, 0.88 | 0.117 |
| > 3 years | -0.65 | -2.18, 0.88 | 0.398 | 0.09 | -0.46, 0.63 | 0.754 |
| Scar thickness (1st time) | ||||||
| ≤ 2 cm | 0 | Ref | Ref | 0 | Ref | Ref |
| > 2 cm | -0.76 | -2.21, 0.70 | 0.302 | 0.39 | -0.13, 0.91 | 0.137 |
| Cause of scar | ||||||
| Acne | 0 | Ref | Ref | 0 | Ref | Ref |
| Other | 0.00 | -1.08, 1.08 | 1 | -0.50 | -0.86, -0.14 | 0.008 |
| Family history of keloids | ||||||
| No | 0 | Ref | Ref | 0 | Ref | Ref |
| Yes | -0.67 | -2.01, 0.66 | 0.315 | 0.23 | -0.25, 0.72 | 0.339 |
| Skin-stretching point; movable area | ||||||
| No | 0 | Ref | Ref | 0 | Ref | Ref |
| Yes | -1.55 | -2.67, -0.44 | 0.007 | -0.10 | -0.54, 0.33 | 0.633 |
CI, confidence interval; VSS, Vancouver Scar Scale.