Opal is a multi-centre trial, funded by the NIHR HTA Programme comparing basic pelvic floor muscle training (PFMT) versus biofeedback-mediated intensive PFMT. The aim of the study is to investigate whether biofeedback-mediated intensive PFMT is more effective and cost-effective than basic PFMT for the treatment of female stress or mixed urinary incontinence.
OPAL will recruit 600 participants. Follow-up will continue for two years.
The trial is led by Prof Suzanne Hagen based at Glasgow Caledonian University.