Table 1. Different characteristics of facial scars according to treatment onset.
| Factors | Onset of Tx* | p-value | ||
|---|---|---|---|---|
| m<1 | 1≤m<6 | 6≤m | ||
| Sex | ||||
| Female | 10 (45.5) | 13 (81.2) | 26 (56.5) | 0.076 |
| Male | 12 (54.5) | 3 (18.8) | 20 (43.5) | |
| Age (y) | ||||
| y<10 | 9 (40.9) | 3 (18.8) | 0 (0.0) | <0.001‡ |
| 10≤y<20 | 2 (9.1) | 0 (0.0) | 13 (28.3) | |
| 20≤y<30 | 6 (27.3) | 4 (25.0) | 14 (30.4) | |
| 30≤y<40 | 1 (4.5) | 0 (0.0) | 11 (23.9) | |
| 40≤y<50 | 1 (4.5) | 4 (25.0) | 4 (8.7) | |
| 50≤y | 3 (13.6) | 5 (31.2) | 4 (8.7) | |
| Location | ||||
| Forehead | 7 (31.8) | 5 (31.2) | 7 (15.2) | 0.030‡ |
| Nose | 4 (18.2) | 3 (18.8) | 4 (8.7) | |
| Perioral area | 2 (9.1) | 4 (25.0) | 7 (15.2) | |
| Cheek | 4 (18.2) | 2 (12.5) | 24 (52.2) | |
| Periocular area | 5 (22.7) | 2 (12.5) | 4 (8.7) | |
| Cause | ||||
| Trauma | 9 (40.9) | 7 (43.8) | 13 (28.3) | 0.338 |
| Operation | 13 (59.1) | 7 (43.8) | 24 (52.2) | |
| Burn | 0 (0.0) | 0 (0.0) | 4 (8.7) | |
| Others | 0 (0.0) | 2 (12.5) | 5 (10.9) | |
| Type | ||||
| Flat | 14 (63.6) | 1 (6.2) | 4 (8.7) | <0.001‡ |
| Atrophic | 0 (0.0) | 2 (12.5) | 11 (23.9) | |
| Hypertrophic | 6 (27.3) | 7 (43.8) | 19 (41.3) | |
| Adhesive | 2 (9.1) | 6 (37.5) | 12 (26.1) | |
| Initial VSS | ||||
| <5 | 13 (59.1) | 5 (31.2) | 22 (47.8) | 0.268 |
| ≥5 | ||||
| Laser modality† | 9 (40.9) | 11 (68.8) | 24 (52.2) | |
| PDL only | 2 (9.1) | 0 (0.0) | 3 (6.5) | 0.296 |
| NAFL only | 10 (45.5) | 9 (56.2) | 31 (67.4) | |
| PDL and NAFL both | 10 (45.5) | 7 (43.8) | 12 (26.1) | |
| Corticosteroid injection | ||||
| No | 14 (63.6) | 11 (68.8) | 34 (73.9) | 0.691 |
| Yes | 8 (34.4) | 5 (31.2) | 12 (26.1) | |
| Tx response | ||||
| Good | 11 (50.0) | 6 (37.5) | 9 (19.6) | 0.059 |
| Moderate | 8 (36.4) | 5 (31.2) | 18 (39.1) | |
| Poor | 3 (13.6) | 2 (12.5) | 15 (32.6) | |
| Resistant | 0 (0.0) | 3 (18.8) | 4 (8.7) | |
Values are presented as number (%). Percentages may not add up to 100 due to rounding. Tx: treatment, m: months, y: years, VSS: Vancouver scar scale, PDL: 595-nm pulsed-dye laser, NAFL: non-ablative fractional laser. *The period between the injury and initiation of laser treatment. †Used laser modalities were selected via an algorithm according to the state of individual scars. ‡p<.05.