Combination therapy studies of third-line treatments were rare and centered on medication with PTNS .
Combination therapy , with certain first , second , and third-line OAB therapies , appears to be efficacious .
AIMS Overactive bladder ( OAB ) affects over 17 % of the population and significantly effect the health-related quality of life .
The treatments for OAB include first line ( lifestyle modification , pelvic floor muscle training ) , second line ( anticholinergic or beta-3 agonist medications ) , and third line therapies ( intradetrusor botulinum toxin injection , sacral neurostimulation [ SNM ] , or percutaneous tibial nerve stimulation [ PTNS ] ) .
For those with urinary incontinence secondary to OAB , complete continence is the goal of therapy , though cure rates are only 5 % to 40 % .
The use of combination therapies can be employed in refractory OAB , however , the efficacy of pooled modalities is relatively unknown .
Our objective was to determine the volume of data supporting combination therapy in treating OAB .
Randomized trial of percutaneous tibial nerve stimulation versus Sham efficacy in the treatment of overactive bladder syndrome: results from the SUmiT trial.
PURPOSE The Study of Urgent PC vs Sham Effectiveness in Treatment of  Overactive Bladder Symptoms ( SUmiT ) was a multicenter , double-blind , r and omized , controlled trial comparing the efficacy of percutaneous tibial nerve stimulation to sham through 12 weeks of therapy . The improvement in global response assessment , voiding diary parameters , and overactive bladder and quality of life question naires was evaluated . MATERIAL S AND METHODS A total of 220 adults with overactive bladder symptoms were r and omized 1:1 to 12 weeks of treatment with weekly percutaneous tibial nerve stimulation or sham therapy .  Overactive bladder and quality of life question naires as well as 3-day voiding diaries were completed at baseline and at 13 weeks . Subject global response assessment s were completed at week 13 . RESULTS The 13-week subject global response assessment for overall bladder symptoms demonstrated that percutaneous tibial nerve stimulation subjects achieved statistically significant improvement in bladder symptoms with 54.5 % reporting moderately or markedly improved responses compared to 20.9 % of sham subjects from baseline ( p < 0.001 ) . All individual global response assessment subset symptom components demonstrated statistically significant improvement from baseline to 13 weeks for percutaneous tibial nerve stimulation compared to sham .  Voiding diary parameters after 12 weeks of therapy showed percutaneous tibial nerve stimulation subjects had statistically significant improvements in frequency , nighttime voids , voids with moderate to severe urgency and urinary urge incontinence episodes compared to sham . No serious device related adverse events or malfunctions were reported . CONCLUSIONS This pivotal multicenter , double-blind , r and omized , sham controlled trial provides level I evidence that percutaneous tibial nerve stimulation therapy is safe and effective in treating overactive bladder symptoms . The compelling efficacy of percutaneous tibial nerve stimulation demonstrated in this trial is consistent with other recently published reports and supports the use of peripheral neuromodulation therapy for overactive bladder
Combination therapy studies of third-line treatments were rare and centered on medication with PTNS .
Combination therapy , with certain first , second , and third-line OAB therapies , appears to be efficacious .
AIMS Overactive bladder ( OAB ) affects over 17 % of the population and significantly effect the health-related quality of life .
The treatments for OAB include first line ( lifestyle modification , pelvic floor muscle training ) , second line ( anticholinergic or beta-3 agonist medications ) , and third line therapies ( intradetrusor botulinum toxin injection , sacral neurostimulation [ SNM ] , or percutaneous tibial nerve stimulation [ PTNS ] ) .
For those with urinary incontinence secondary to OAB , complete continence is the goal of therapy , though cure rates are only 5 % to 40 % .
The use of combination therapies can be employed in refractory OAB , however , the efficacy of pooled modalities is relatively unknown .
Our objective was to determine the volume of data supporting combination therapy in treating OAB .