
Whether a woman develops stress urinary incontinence, urge urinary incontinence, or mixed urinary incontinence is largely a product of a confluence of age, race, and body mass index, according to a cross-sectional analysis of the Reproductive Risks of Incontinence Study at Kaiser, a population-based study of 2,109 women over age 40 funded by the National Institute of Diabetes and Digestive and Kidney Diseases.