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) | |