PURPOSE: AUA Guidelines suggest dietary change as first line treatment for IC/BPS.
We previously developed a validated survey instrument to determine which foods, beverages and supplements exacerbate the symptoms of this condition. The purpose of this study was to develop a shortened questionnaire that would provide an easily self-administered food-symptom history useful for clinical practice and future research investigations.
MATERIALS AND METHODS: Using data from our previously validated food sensitivity questionnaire, we remodeled the original, lengthy survey to an abbreviated list including the 35 most problematic comestibles. The instrument was reviewed by a panel of experts for face and content validity; tested for internal consistency, readability and clarity, and for test-retest reliability.
RESULTS: Fifty two (42%) of the 124 patients who completed a baseline questionnaire returned the second instrument one week after completing the first. Internal consistency was determined to be high (α=0.96). Forty seven patients (90.4%) indicated they were food sensitive. Test-retest reliability of the questionnaire was assessed using Spearman correlation coefficients, and ranged from moderate (ρ=0.48 for Equal) to very strong (ρ=0.90 for beer). Discrepancies between survey instruments with regard to individual comestibles occurred only 1% of the time.
CONCLUSIONS: Our short form diet history questionnaire (based upon a previously validated "long form") is a reliable newly validated instrument that will help identify comestibles associated with IC/BPS symptoms. Its brevity makes it simple to administer and useful in the dietary management of this patient population.
Shorter B, Ackerman M, Varvara M, Moldwin RM. Are you the author?
Department of Nutrition, LIU Post, Brookville, New York; Department of Urology, Smith Institute for Urology, New Hyde Park, New York.
Reference: J Urol. 2013 Dec 5. pii: S0022-5347(13)06013-8.