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Performance of the Incontinence Impact Questionnaire in Canada
Beaulieu Sylvie; Collet Jean-Paul; Tu Le Mai; Macrammalla Effat; Wood-Dauphinee Sharon; Corcos Jacques; Urology Dept, Sir Mortimer B. Davis - Jewish General Hospital, Dept of Urology,
Feb 1999 (Vol. 6, Issue 1, Pages( 692 - 699)

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  • The Incontinence Impact Questionnaire (IIQ) was developed in the US and has been shown to be a valid and reliable measure of how urinary incontinence (UI) affects a woman's quality of life. This study aimed to test the performance of the IIQ in Canada with English and French-speaking Canadians. The IIQ underwent professional forwards-backwards translation and psychometric testing. Women (36 English and 34 French-speaking) consulting a urologist for stress urinary incontinence underwent routine multichannel urodynamic testing and completed the SF-36 and the IIQ. Test-retest reliability was moderate (ICC = .73) and each IIQ subscale demonstrated good internal consistency (a= .83 to .91). Moderate correlations between IIQ scores and number of pads/day and severity ratings support construct validity in both languages. In English, correlations with Physical and Social Functioning scales of the SF-36 were also moderate. The IIQ has demonstrated strong reliability and adequate validity with English-speaking Canadian women. Moreover, similar psychometric properties in both English and French provide evidence that the IIQ has been successfully translated into Canadian French.

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