Park 2014 Abstract.

Methods	Single‐centre RCT Computer‐generated randomisation schedule Patients were blinded to examiner (nurse). Two years' follow‐up Sample size of 50 per group provides 80% power to detect a 20% difference between groups. ITT analysis Groups same at the start Follow‐up 6 weeks, 6 months, 12 months, 24 months Completed 2 years' follow‐up: Gp A 43/53 (77%); Gp B 38/53 (72%)
Participants	172 eligible 109 randomised (63 excluded) Inclusion: women aged 31 to 77 years with symptomatic prolapse (≥ stage 2) undergoing laparoscopic sacral colpopexy Exclusion: none A: 56 B: 53 Completed analysis in 2 years: Gp A 43 (77%); Gp B 38 (72%)
Interventions	A: Native tissue repair 56 2. Biological graft 53
Outcomes	Adverse events Mesh exposure
Notes	t‐tests and regression analyses used to determine statistical significance USA
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated block, similar groups
Allocation concealment (selection bias)	Unclear risk	Not stated
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Participants blinded for 2 years
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Blinded examiner
Incomplete outcome data (attrition bias) All outcomes	High risk	At 2 years, native tissue 43/53 (77%) (23% attrition) Biological graft 38/53 (72%) (28% attrition)
Selective reporting (reporting bias)	High risk	No primary outcomes of this review reported, protocol not found
Other bias	Unclear risk	Not stated Trial done in women undergoing a different operation ‐ laparoscopic sacral colpopexy