“…Five of six studies found fluid and electrolyte disorder to strongly increase the risk of CDI (aOR range 1.46 [95% CI 1.17-1.84] to 9.96 [95% CI 9.37-10.60]) [30,31,34,42,64,70]. Bowel disease [30, 42-44, 48-51, 69, 74-77], coagulation disorders [31,34,42,47,49,52,54,62,64,70], and being underweight [31,32,34,42,44,49,52,64,78,79] were also found to be possible risk factors. Obesity appeared to have a protective effect and decreased the risk of CDI in four studies, with aORs ranging from 0.252 (95% CI 0.058-0.945) to 0.81 (95% CI 0.74-0.87) [34,49,52,80], although no significant effect was found in the other seven studies [42,48,53,63,64,78,81].…”