Sand 2000

Methods	RCT by random number table. Follow‐up at 3 months and at 72.6 months (mean)
Participants	36 women with genuine stress incontinence and a maximum urethral closure pressure ≤ 20 cm H2O. Groups comparable in terms of age, parity, and urodynamic variables, except for detrusor instability (> Burch vs sling) and residual volume (> Burch vs sling)
Interventions	A (17): Polytetrafluoroethylene sling operation B (19): modified (overcorrection) Burch colposuspension
Outcomes	Cure defined as objective (urodynamic) and subjective (history) Objective cure (long‐term): A: 100% 13/13, B: 86% 13/15 Subjective cure (long‐term): A: 84% 11/13, B: 93% 14/15 There were no statistically significant differences in outcome measures
Notes	The first publication (2000) reported the short‐term follow‐up and was considered the primary reference. The last publication (2003) reported the long‐term results
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Random number table
Allocation concealment (selection bias)	Unclear risk	Not mentioned
Blinding (performance bias and detection bias) All outcomes	Unclear risk	Not mentioned
Incomplete outcome data (attrition bias) All outcomes	Low risk	Similar losses in both groups at long‐term assessment