Impact of mechanical bowel preparation in elective colorectal surgery: A meta-analysis

Figure 2 Forest plot comparing overall anastomotic leak rate for patients receiving mechanical bowel preparation vs either a single rectal enema (top) or absolutely no preparation (bottom). A Mantel-Haenszel random effects model was used to perform the meta-analysis and odds ratios are quoted including 95% confidence intervals. MBP: Mechanical bowel preparation.