A validated patient reported measure of urinary urgency severity in overactive bladder for use in clinical trials.

Purpose: Overactive bladder (OAB) is a syndrome consisting of urinary urgency with or without urge incontinence, usually with increased urinary frequency and nocturia. In response to current limitations in OAB clinical research a new patient reported measure of urgency severity associated with OAB has been developed, namely the Indevus Urgency Severity Scale (IUSS). We report the measurement properties of the IUSS.