Univariate risk factors for asymptomatic carriage of C. difficile.

There were no C. difficile carriers with the following risk factors: inflammatory bowel disease (present in 1/112 (1%) participants), haematological malignancy (5/112 (4%)), gastrointestinal surgery (5/112 (4%) with surgery in current admission, 12/112 (11%) with past surgery), current nasogastric tube placement (3/112 (3%)), previous CDI (5/112 (4%)), contact with a CDI case (2/112 (2%)), vegetarian diet (7/112 (6%)), and overseas travel (4/112 (4%)). *Given the study design, most participants spent relatively short amounts of time in hospital prior to enrolment, median (IQR) 2 (1–6) days.