• The short-term outcome of "positive response" is defined as able to reduce leakage during coughing to under 2 ml or 50% decrease from baseline (whichever is more stringent). This will be evaluated immediately at 1 month.
  

• Long-term success (3-months and 1-year) is defined both by the paper towel test criteria and by documentation of at least 50% reduction of leakage in diary to reflect success at home.
  

This proposal aims to develop and test, in a general population of women with stress urinary incontinence (SUI), a model for predicting who will succeed in overcoming incontinence long-term (1-year) by simply using Knack therapy (thus avoiding invasive and costly surgery and time consuming Kegel's exercises). Specific Aims are to:

• develop a logistic regression model to predict success with the Knack;
• validate the model by determining the proportion of people who succeed according to who is predicted to succeed; and
• develop long-term effectiveness of the Knack (1-year).

The project will be implemented in three phases: model development (n=160 women), model validation (n~160), and long-term follow-up of women who demonstrate response. This will be evaluated immediately and at 1 month and at 3-months and 1-year.