Urodynamics, the supine empty bladder stress test, and incontinence severity

Aims Determine whether urodynamic measures of urethral function [(valsalva leak point pressure (VLPP), maximum urethral closure pressure (MUCP), functional urethral length (FUL)] and the results of the supine empty bladder stress test (SEBST) correlate with each other and with subjective and objective measures of urinary incontinence (UI). Methods Data were collected preoperatively from subjects enrolled in a multicenter surgical trial of mid‐urethral slings. Subjective measures included questionnaire scores from the Medical Epidemiological and Social Aspects of Aging Questionnaire, Urogenital Distress Inventory, and Incontinence Impact Questionnaire. Objective measures included a 24‐hr pad weight test, incontinence episode frequency on a 3‐day voiding diary, and a SEBST. Results Five hundred ninety‐seven women enrolled. Three hundred seventy‐two women had valid VLPP values; 539 had valid MUCP/FUL values. Subjective measures of severity had weak to moderate correlation with each other (r = 0.25–0.43) and with objective measures of severity (r = −0.06 to 0.45). VLPP and MUCP had moderate correlation with each other (r = 0.36,