While it is hard to gauge the true scale of the problem, research suggests that around 13% of women in the UK may have some form of urinary incontinence. Although many conditions and factors can cause urinary incontinence, one major cause is overactive bladder syndrome. The condition is marked by uncontrolled contraction of the bladder that results in an urgent need to pass urine. While this can lead women to need the toilet frequently, some also experience a form of leakage called urge incontinence.
An overactive bladder can be a cause of urge incontinence, which is when urine leaks at the same time or just after you feel an intense urge to pass urine. Urge incontinence differs from stress incontinence, where the pelvic floor muscles are too weak to prevent urination. This causes urine to leak when your bladder is placed under pressure from actions such as coughing or laughing.
This was a placebo-controlled randomised controlled trial that examined the effectiveness and safety of using botulinum toxin (botox) as a treatment for overactive bladder syndrome. A randomised controlled trial is the best way to measure the effectiveness of a treatment, as the randomisation process helps to ensure that any patient characteristics that may influence the outcome have an equal chance of appearing in either treatment group. This allows researchers to be confident that any observed effect is due to the treatment under study.