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Table 1 Demographic characteristics of acne cases and controls and prevalence of severity and scarring grades among acne cases

From: Modifiable and non-modifiable epidemiological risk factors for acne, acne severity and acne scarring among Malaysian Chinese: a cross-sectional study

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)
  1. Values are frequencies (%)