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The Responsiveness of the Overactive Bladder Questionnaire (OAB-q)

Karin S. Coyne, Louis S. Matza and Christine L. Thompson
Quality of Life Research
Vol. 14, No. 3 (Apr., 2005), pp. 849-855
Published by: Springer
Stable URL: http://www.jstor.org/stable/4038833
Page Count: 7
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The Responsiveness of the Overactive Bladder Questionnaire (OAB-q)
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Abstract

Purpose: The purpose of this study was to examine the responsiveness of the Overactive Bladder questionnaire (OAB-q) during anti-muscarinic treatment. Methods: OAB patients were treated with tolterodine ER 4 mg/day for 12 weeks. The OAB-q and 3-day micturition diaries were collected at baseline, 4, and 12 weeks. The patients' and physicians' perceptions of treatment benefit were assessed at 4 and 12 weeks. Responsiveness of the OAB-q was examined with effect sizes and comparisons to other measures using ANOVAs, t-tests, and correlations. Results: A total of 865 patients completed the 12-week study (mean age 61 years; 73% female; 89% Caucasian). From baseline to 4 weeks, significant improvements (p < 0.0001) occurred in all OAB-q subscales, which were maintained through week 12. The OAB-q was highly responsive with subscale effect sizes ranging from 0.44 (social interaction) to 1.2 (symptom bother). Significant score changes in all OAB-q subscales (p < 0.05) were associated with reductions of ≥3 urgency episodes, ≥3 micturitions, or ≥1 incontinence episode per day. Improvements in OAB-q scales were associated with changes in patient and physician perceptions of treatment benefit. Conclusions: The OAB-q was highly responsive and demonstrated responsiveness to reductions in urinary urgency, frequency, and incontinence during antimuscarinic treatment of OAB. The OAB-q appears to be a useful outcome measure for treatments of OAB.

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