Materials and Methods
The study was approved by the Health Research Authority and the Research Ethics Committee. REC reference: 17/SW/0110. IRAS project ID: 223334. The study was funded by the United Kingdom Continence Society grant, which was externally peer reviewed for scientific quality: reference SCR/PDK. A follow up postal questionnaire survey of all 180 patients recruited to the original trial was performed7. This trial had involved 11 NHS Hospital Trusts and participants were invited by postal survey. A patient information leaflet was provided, and a written informed consent included. All patients who wished to participate in the study were given the option to either return the completed questionnaires in the provided envelopes or request further information if desired. Only one reminder was permitted. Questionnaires were not sent to those who were deceased.