Table 5.

The use of mechanical bowel preparation and Clostridium difficile infection after colectomy.

Variable	Unadjusted Odds Ratio, (95% confidence interval [CI])	Adjusted** Odds Ratio (95% CI)
No mechanical bowel preparation	Reference	---
Yes mechanical bowel preparation	OR=0.98 (0.53-1.81)	OR=0.96 (0.50- 1.83)
Without oral antibiotics*	Reference	---
With oral antibiotics*	OR=0.55 (0.27-1.10)	OR=0.60 (0.29-1.23)

^*Cohort that used mechanical bowel preparation

^**Adjusted for characteristics that achieved p<0.05 association in univariate analyses.

Among full cohort: body mass index, preoperative functional status, type of resection, ASA status, congestive heart failure, history of myocardial infarction, acute renal failure, steroid use, bleeding disorder, transfusions, sepsis and transfer from healthcare facility.

Among those who used a mechanical bowel preparation: body mass index, sex, race, type of resection, pneumonia, steroid use and sepsis.