Demographics of the patient cohort.

n: number; CDI: Clostridium difficile infection; AAD: Antibiotic-associated diarrhoea; BMI: Body mass index; IQR: Interquartile range; SD: Standard deviation;*Means for normally distributed, continuous variables were compared using Independent samples T-test for continuous, for non-normal distribution median values were compared using Mann Whitney U test. Categorical data was assessed using a Chi-squared test for all counts >5, and Fisher’s Exact test for those **Charlson comorbidity score is calculated without accounting for age (see statistical methods);aData regarding duration of symptoms was unavailable for 19 of our cases and 6 of our controls;bData regarding recurrence of disease within 90 days was unavailable for 48 of our cases;cIsolates were successfully recovered from 149/164 cases and thus ribotyping could not be done in 15 of our cases.Demographics of the patient cohort.