Test-retest reliability of four questionnaires for patients with overactive bladder: The overactive bladder questionnaire (OAB-q), patient perception of bladder condition (PPBC), urgency questionnaire (UQ), and the primary OAB symptom questionnaire (POSQ) (original) (raw)

2005, Neurourology and Urodynamics

Aims: This study examined test-retest reliability of four patient-reported outcome measures for patients with overactive bladder (OAB): Overactive Bladder Questionnaire (OAB-q), Patient Perception of Bladder Condition (PPBC), Urgency Questionnaire (UQ), and Primary OAB Symptom Questionnaire (POSQ). Methods: Patients recruited from urology clinics were scheduled for two visits 2 weeks apart and completed all questionnaires at both visits. A demographic form was completed at Visit 1; and a treatment e¡ect scale was completed at Visit 2. Test-retest reliability was examined among stable patients using intraclass correlations (ICC), Spearman's correlations, paired t-tests, Feldt's statistic, and kappas. Results: A total of 47 patients enrolled (mean age ¼ 66.0 years, 74.5% female), with 46 completing both visits; 35 were classi¢ed stable. Statistically signi¢cant correlations were present between Visits 1 and 2 (P < 0.05) for all subscales of the OAB-q, UQ, and POSQ. Subscale ICCs were moderate to high (OAB-q ! 0.83, UQ ! 0.46, POSQ continuous items ! 0.68). No signi¢cant di¡erences between Visit 1 and 2 were noted, except for the OAB-q symptom bother scale (change of 5.8 points on a 100-point scale). The multi-item subscales of the OAB-q and the UQ demonstrated good internal consistency (Cronbach's alpha ! 0.83 for all subscales) across both visits. Test-retest reliability of the PPBC was somewhat weaker than the other three measures, but still acceptable for use as a global, single-item outcome measure. Conclusions: The OAB-q, POSQ, and UQ demonstrated good test-retest reliability, with ICCs roughly equivalent or superior to those previously reported for 7-day micturition diaries. Findings suggest that the four measures examined in this study demonstrate the necessary reproducibility for use as outcome measures for OAB treatments.