Tseng 2007 L.

Methods	Randomised comparative study computer‐generated randomisation list
Participants	Women with overactive bladder mean age 65.2; range 58‐73, mean parity 2.5; range 1‐5
Interventions	40 women 2mg detrusitol; 40 women 2mg detrusitol and vaginal oestrogen 1gm twice a week for a three month period
Outcomes	Clinical exam, bladder diary, UDI questionnaire assessed at 0,6,12, weeks after treatment
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated randomisation list
Allocation concealment (selection bias)	Unclear risk	no description
Blinding (performance bias and detection bias) All outcomes	High risk
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	no description