Results of a clinical trial designed to compare the efficacy of 20 Hz and 75 Hz transcutaneous nerve stimulation (TENS) in patients with poststroke incontinence reveal that 20 Hz TENS has greater efficacy in this patient group. Patients receiving 20 Hz TENS had significant improvements in symptoms of urinary incontinence compared with patients who received 75 Hz TENS. However, treatment with 75 Hz TENS still resulted in significant improvements in symptoms of urinary incontinence compared with no treatment.