Osman 2003

Methods	RCT (block‐randomisation technique). Follow‐up reported at 6 months. Selection criteria were well reported
Participants	75 women with mixed incontinence symptoms and a negative cystometrogram for motor detrusor overactivity. All had proven stress urinary incontinence. No details on demographic data were reported 21 participants (anticholinergic) and 24 (sling) were available to follow up
Interventions	A (50): surgery (Ai (24) Burch colposuspension, Aii (26) rectus fascia sling) B (25): anticholinergic treatment
Outcomes	Participants were evaluated by SEAPI score (subjective and objective) and underwent urodynamic examination pre and post treatment Cure for urge symptoms: Aii: 88%; B:57% Cure for SUI: Aii: 83%; B: 0
Notes	The study was designed to investigate anticholinergic therapy in comparison with surgery. Participants allocated to surgery had a sling procedure if the Valsalva leak point pressure was < 90 cm H2O. We extracted only data on sling in comparison with anticholinergics
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Block randomisation
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	Of 75 women randomised, 68 evaluated at 6 months. Four lost in anticholinergic arm and 3 in surgical arm. Insufficient information to determine whether appropriately addressed or not