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Clinical and demographic characteristics of the study population (N=80).
| Characteristics | n | % |
| Age (years) | ||
| Mean (SD) | 20.5 (4.8) | |
| Range | 13 - 35 | |
| Gender | ||
| Female | 42 | 52.5 |
| Race | ||
| Non-Caucasian | 51 | 64.0 |
| Acne duration (years) | ||
| Mean (SD) | 6.6 (4.4) | |
| Range | 0.3 - 21 | |
| Acne vulgaris classification (AAD) | ||
| Mild | 27 | 33.8 |
| Moderate | 29 | 36.2 |
| Severe | 24 | 30.0 |
Legend: SD = standard deviation; AAD = American Academy of Dermatology
