- patients with stress urinary incontinence: a history of symptoms of stress urinary incontinence for at least 3 months (including anamnestic complaints of involuntary leakage on effort or exertion or on sneezing or coughing) and a positive provocative stress test (defined as an observed transurethral loss of urine that was simultaneous with a cough or Valsalva maneuver at a bladder volume of 300ml or less)