Table 3. The clinical data of acne patients and normal controls according to age (<25 years or ≥25 years).
| T-zone dominant group | U-zone dominant group | Mixed group | Total patients | Control group | |
|---|---|---|---|---|---|
| <25 years | |||||
| No. of patients | 2 | 34 | 17 | 53 | 31 |
| Male:female ratio | 0:2 | 1:0.62 | 1:0.7 | 1:0.71 | 1:1.07 |
| Male/female | 0/2 | 21/13 | 10/7 | 31/22 | 15/16 |
| Age (yr) | 13.5±2.1 | 19.9±3.2 | 20.4±2.8 | 19.8±3.2 | 20.8±2.6 |
| Onset age (yr) | 14.0±2.1 | 17.0±3.4 | 17.8±4.1 | 17.1±3.5 | N/A |
| Secreted sebum level | |||||
| T-zone | 43.4±12.8 | 107.7±74.6 | 113.1±60.2* | 107.0±69.4 | 78.9±38.2 |
| U-zone | 10.0±8.5 | 83.3±83.5* | 76.8±55.9* | 78.4±74.8 | 43.7±28.6 |
| Whole face | 28.2±8.5 | 96.7±73.7* | 98.0±50.7* | 94.5±66.4 | 64.8±28.9 |
| ≥25 years | |||||
| No. of patients | 1 | 10 | 3 | 14 | 19 |
| Male:female ratio | 0:1 | 1:0.43 | 1:2 | 1:0.75 | 1:0.9 |
| Male/female | 0/1 | 7/3 | 1/2 | 8/6 | 10/9 |
| Age (yr) | 27.0 | 29.9±5.5 | 28.3±4.9 | 29.4±5.1 | 25.5±0.8 |
| Onset age (yr) | 25.0 | 24.4±8.8 | 25.5±7.8 | 24.7±8.1 | N/A |
| Secreted sebum level | |||||
| T-zone | 146.3 | 76.0±54.7 | 85.0±5.8 | 83.0±49.3 | 83.3±41.4 |
| U-zone | 54.0 | 60.7±57.0 | 52.2±24.2 | 58.4±48.5 | 41.1±31.1 |
| Whole face | 109.4 | 69.4±51.8 | 71.9±13.1 | 72.8±44.7 | 66.3±34.7 |
Values are presented as number only or mean±standard deviation. N/A: not applicable. *Significantly different from control group (p<0.05).