Mettler 2004.

Study characteristics
Methods	Truly randomised trial (computer‐generated). Blinding: yes Time of randomisation: not stated Multi‐centre—Germany and France
Participants	64 women with a mean age of 34.9 years undergoing laparoscopy or laparotomy for treatment of fibroids Exclusion criteria: women younger than 18 years of age Cannot adequately communicate in German or English Unwilling to undergo second‐look laparoscopy Number of women randomly assigned: 64 Number of women undergoing second‐look laparoscopy: 62.5% return rate for second look
Interventions	Polyethylene glycol versus no treatment
Outcomes	Analysed in review Presence or absence of adhesions at second‐look laparoscopy Other outcomes Change in severity of adhesions at second‐look laparoscopy
Notes	Adhesion scoring system used Mean adhesion tenacity score
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Quote: "Computer‐generated randomization schema"
Allocation concealment (selection bias)	Low risk	Quote: "Until the completion of the surgical resection procedure, at which time a preprinted, sealed envelope was opened"
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Insufficient information to permit judgement
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No mention is made of an independent, blinded reviewer at SLL
Incomplete outcome data (attrition bias) All outcomes	Low risk	No missing outcome data
Selective reporting (reporting bias)	Unclear risk	Data presented in full for all outcomes specified, however, no study protocol or trial registry identified for comparison
Other bias	Low risk	Funded by Confluent Surgical