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Patient age [years] and severity of acne at time of sample collection
| Characteristics | N | Missing | Minimum | 1st quartile | Median | 3rd quartile | Maximum |
|---|---|---|---|---|---|---|---|
| Age [years] | 72 | 1 | 10.0 | 18.0 | 21.0 | 26.0 | 64.0 |
| Severity grade of acne* | 73 | 0 | 1.0 | 3.0 | 4.0 | 6.0 | 11.0 |
According to Leeds revised acne grading system (O’Brien et al. 6 ).
