Table 1.
Demographic characteristics of acne cases and controls and prevalence of severity and scarring grades among acne cases
| Variable | Case (n = 1117) | Control (n = 723) |
|---|---|---|
| Gender | ||
| Male | 374 (33.5) | 228 (31.5) |
| Female | 743 (66.5) | 494 (68.3) |
| Not stated | 0 (0.0) | 1 (0.1) |
| Age | ||
| > 24 | 56 (5.0) | 52 (7.2) |
| 20 to 24 | 749 (67.1) | 463 (64.0) |
| ≤ 19 | 312 (27.9) | 207 (28.6) |
| Not stated | 0 (0.0) | 1 (0.1) |
| Acne severity grades (n = 1051) | ||
| Nil (no current acne) | 97 (9.2) | |
| Mild | 727 (69.2) | |
| Moderate | 224 (21.3) | |
| Severe | 3 (0.3) | |
| Acne scarring grades (n = 1052) | ||
| Grade 0 (no current scars) | 317 (30.1) | |
| Grade 1 | 431 (41.0) | |
| Grade 2 | 246 (23.4) | |
| Grade 3 | 57 (5.4) | |
| Grade 4 | 1 (0.1) | |
Values are frequencies (%)