| Change in lesion counts ‐ total | ||||
| Study | Time points | Azelaic acid | Other topical treatments | P value |
| long term | ||||
| Thielitz 2015 | Long term: three months after start of treatment (percent reduction of total lesions) (n, mean ± SD) | AzA9M: n =17, 33.54 ± 39.96 AzA3M: n = 19, 38.75 ± 29.24 |
Adapalene: n = 19, 48.87 ± 26.39 | P = 0.396 (AzA9M + AzA3M versus Adapalene) |
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