Characteristics of MSM visiting the STI clinic who used antibiotic STI-prophylaxis
| Patient | Number of sex partners <6 months | Chemsex* | HIV positive | HIV-PrEP use | Intention to use HIV-PrEP | Antibiotic used STI-prophylaxis | Mode of use |
| 1 | 6 | No | No | No | No | Azithromycin | In case of symptoms |
| 2 | 11 | No | No | No | Yes | Azithromycin | In case of symptoms |
| 3 | 5 | No | No | No | Yes | Azithromycin | Daily |
| 4 | 10 | No | No | No | Yes | Ciprofloxacin | Around sex |
| 5 | 10 | Yes | No | Yes | NA | Doxycycline | Around sex |
| 6 | 15 | Yes | Yes | NA | NA | Doxycycline | Around sex |
| 7 | 1 | No | No | No | No | Unknown | Around sex |
| Total | Median: 10 | 29% | 14% | 14% | 43% | NA | NA |
Median age of patients was 40 years (IQR 37–43; range 35–57 years). All patients were higher educated.
*Chemsex: the use of drugs during sex. Drugs included in this definition were crystal meth, cocaine, designer drugs (2-CB, 3 MMC, 4-FA and 4-MEC), GHB, GBL, ketamine, MDMA, mephedrone, speed and XTC.
HIV-PrEP, HIV pre-exposure prophylaxis ; MSM, men who have sex with men; NA, Not applicable.