Treatment history of antibiotics for oral administration (group 1a) and topical use (group 1b)
| Profile | Group 1a (n=67) | Group 1b (n=26) |
| Subjects who received only a kind of antibiotic | 19 (28.4) | 10 (38.5) |
| Two kinds of antibiotic | 7 (10.4) | 3 (11.5) |
| One type of antibiotic use plus TCM products | 15 (22.4) | 6 (23.1) |
| One type of antibiotic use plus BPO | 9 (13.4) | 2 (7.7) |
| One type of antibiotic use plus retinoids | 8 (11.9) | 2 (7.7) |
| One type of antibiotic use plus physical treatments | 3 (4.5) | 3 (11.5) |
| One type of oral antibiotic plus one type of topical antibiotic | 6 (9.0) | – |
Data were expressed as n (%).
BPO, benzoyl peroxide; TCM, traditional Chinese herbal medicine.