The reasons for antimicrobial drug use according to the survey site*
| Reasons | Total n=327 | Site A n=79 | Site B n=248 |
| Treatment for infection | 163 (49.8) | 43 (54.4) | 120 (48.4) |
| Prophylaxis | |||
| Surgical | 101 (30.9) | 28 (35.4) | 73 (29.4) |
| Medical | 46 (14.1) | 5 (6.3) | 41 (16.5) |
| Non-infectious reasons | 3 (0.9) | 1 (1.3) | 2 (0.8) |
| Unknown reasons | 14 (4.3) | 2 (2.5) | 12 (4.8) |
*Values are the number of antimicrobial drugs, with the percentage of the total number of antimicrobial drugs in parenthesis according to the site.