OBJECTIVE: The I-QOL is a 22-item incontinence-specific measure originally developed in the USA and subsequently adapted into numerous other language versions. The British-English language version has not yet been validated. The purpose of this presentation is to report the psychometric performance characteristics of the UK version of the I-QOL. METHODS: The I-QOL was included in a cross-sectional, descriptive health outcomes study among female care-seekers at 17 large primary care clinics throughout the UK. A total of 2400 women between 18 and 91 years of age took the survey while waiting to be seen by their care providers. Twenty-two percent (n=503) of these women reported symptoms of stress urinary incontinence; 21% (n=538) mixed; and 4% (n=85) urge incontinence without overactive bladder. Other measures included the Scale for Activity Interference and Limitation (SAIL, incontinence-specific individualized activity limitations), the Symptom Frequency and Bothersomeness scale (SFB-SUI), self-perceived severity, self-reported episodes, and a variety of other demographic and descriptive variables. Psychometric testing was conducted using standardized procedures. Reproducibility could not be assessed within the study design. RESULTS: Principal component analyses confirmed the original measurement model of three subscales (avoidance and limiting behavior, psychosocial impacts, and social embarrassment) and a total summary score. Internal consistency values were acceptable (alpha ranged between 0.87 and 0.95) and, as hypothesized, the I-QOL had strong associations with both the SFB-SUI (symptoms) (>0.60) and the SAIL (limitations) (>0.67) scales. Quality of life scores became significantly worse as the patients' perception of severity increased (p<0.001) and number of incontinent episodes increased (p<0.001). CONCLUSION: This cross-sectional assessment of the British-English version has shown it to have similar psychometric performance to those previously published for the original measure, making this I-QOL language version a valid PRO for incorporation in community based studies of patients with varying types and severity of urinary incontinence.