Prebiopsy Rectal Cultures
In the prebiopsy rectal cultures, growth of relevant bacteria was observed on 196 agars containing ciprofloxacin (n = 1288; 15.2%), interpreted as ciprofloxacin resistance. Growth rates on the agar with ciprofloxacin varied considerably between hospitals (also within the same geographic region) from 11.9% to 26.3%. Zooming in on the 636 patients in the IG, swabs were collected a median of 22 days (IQR, 15–32) before PB; ciprofloxacin resistance was found in 14.8%. Additional microbiological data are available in 