• Qual Life Res · Jun 2011

    Randomized Controlled Trial Comparative Study

    Comparison of 7-day and repeated 24-h recall of type 2 diabetes.

    • A V Bennett, D L Patrick, D M Bushnell, C F Chiou, and P Diehr.
    • Health Outcomes Research Group, Memorial Sloan-Kettering Cancer Center, New York, NY, USA. bennetta@mskcc.org
    • Qual Life Res. 2011 Jun 1; 20 (5): 769-77.

    PurposePatient reporting of type 2 diabetes symptoms in a questionnaire with a 7-day recall period was expected to be different from symptom reports using a 7-day diary with repeated 24-h recall based on cognitive theory of memory processes and prior literature. This study compared these two types of recall in patients diagnosed with type 2 diabetes (T2D).MethodsOne hundred and forty adults with T2D completed a daily diary for 7 days containing 9 T2D-related symptom and impact items. On day 7, patients completed the same items with a 7-day recall period. We examined the concordance of 7-day recall with summary descriptors of the daily reports and compared the scores and the discriminant ability of 7-day recall and mean of daily reports.ResultsSeven-day recall was most concordant with the mean of daily reports. The average difference in scores was small (range 0.22-0.77 on 11-point scale) and less than 0.5 standard deviations. For some items, the difference was positively associated with the variation in daily reports. The discriminant ability was comparable.ConclusionsIn this study population, a questionnaire with 7-day recall provided information consistent with a daily diary measure of the average week-long experience of T2D symptoms and impacts.

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