The evidence considered by the Interventional Procedures Advisory Committee is described in the following document.
'Brazzelli M, Murray A, Fraser C, Grant A. Systematic review of the efficacy and safety of sacral nerve stimulation for urinary urge incontinence and urgency-frequency. Aberdeen: Review Body for Interventional Procedures; 2003'. Commissioned by the National Institute for Clinical Excellence.
NICE has produced information on this procedure for patients and carers ('Understanding NICE guidance'). It explains the nature of the procedure and the guidance issued by NICE, and has been written with patient consent in mind.