Abstract
Aims:
The aims of this article are to correlate two multi-domain patient questionnaires for overactive bladder (OAB) and to assess their performance against quality-of-life measures.
Methods:
Patients with OAB symptoms due to idiopathic detrusor overactivity completed an Overactive Bladder Symptom Score (OABSS), an ICIQ-OAB questionnaire and a Likert quality of life (QoL) score before and six weeks following intravesical botulinum toxin treatment. They also listed lifestyle goals to which they aspired following treatment. Correlations between domains, total scores, QoL and goal achievement were calculated.
Results:
Fifty-seven patients returned 113 sets of questionnaires for analysis. A very close correlation was found between individual symptoms scores (Spearman r ranging from 0.93 for nocturia to 0.74 for urgency incontinence) and between the total scores of the two questionnaires (r = 0.83). The sum of the OABSS+QoL scores also correlated strongly with total ICIQ-OAB scores (r = 0.85). The correlation between total problem scores on the ICIQ-OAB and the Likert QoL was lower (r = 0.689) but remained significant. The effect sizes (ES) were large (ranging from r = 0.6 to r = 1.0) and the standard response means (SRM) varied between 0.6 and 1.1, indicating a good correlation between the two questionnaires.
Conclusions:
Both questionnaires provide similar information in terms of symptom presence or absence and their impact on QoL. The addition of the QoL score to the standard OABSS did not add to its benefit.
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