Tabusso 2002.

Methods	Randomisation, blinding, withdrawal and dropouts: no details. Follow up: until hospital discharge (not specified).
Participants	Inclusion criteria: participants with colorectal cancer, submitted for elective colorectal surgery. Exclusion criteria: no details. Diseases: colorectal cancer. Number: 47 (21 male, 26 female). Age: 22‐87 years. Location of study: Lima, Peru. Date: October 1999‐January 2001. Antibiotics: intravenously, against anaerobic and Gram‐negative bacteria, 30 minutes before surgery.
Interventions	Group A ‐ MBP (n = 24): mannitol or PEG electrolyte solution + liquid diet 48 h before surgery. Group B ‐ liquid diet 48 h before surgery (n = 23).
Outcomes	Wound infection: Group A = 2; Group B = 0. Anastomotic leakage: Group A = 5; Group B = 0. Peritonitis: Group A = 3; Group B = 0.
Notes	Length of hospital stay: Group A = 17‐19 days (mean 14); Group B = 6‐15 days (mean 11). Analysed only the complications related with the surgery. Participants without anastomosis (2 in Group A; 3 in Group B).
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	B ‐ Unclear