The development and validation of a neuropathy- and foot ulcer-specific quality of life instrument

Loretta Vileikyte, Mark Peyrot, Christine Bundy, Richard R. Rubin, Howard Leventhal, Pablo Mora, Jonathan E. Shaw, Paul Baker, Andrew J.M. Boulton

    Research output: Contribution to journalArticlepeer-review

    Abstract

    OBJECTIVE - The purpose of this study was to develop a questionnaire that measures patients' perceptions of the impact of diabetic peripheral neuropathy and foot ulcers on their quality of life and to assess the psychometric properties of this instrument in a sample of patients with varying severity and symptomatology of diabetic peripheral neuropathy. RESEARCH DESIGN AND METHODS - The neuropathy- and foot ulcer-specific quality of life instrument (NeuroQoL), generated from interviews with patients with (n = 47) and without (n = 15) diabetic peripheral neuropathy, was administered to 418 consecutive patients with diabetic peripheral neuropathy (35% with foot ulcer history) attending either U.K. (n = 290) or U.S. (n = 128) diabetes centers. Psychometric tests of NeuroQoL included factor analyses and internal consistency of scales; a series of multivariate analyses were performed to establish its criterion, construct, and incremental validity. Results were compared with those obtained using the Short Form (SF)-12 measure of health-related functioning. RESULTS - Factor analyses of NeuroQoL revealed three physical symptom measures and two psychosocial functioning measures with good reliability (α = 0.86-0.95). NeuroQoL was more strongly associated with measures of neuropathic severity than SF-12, more fully mediated the relationship of diabetic peripheral neuropathy with overall quality of life, and significantly increased explained variance in overall quality of life over SF-12. CONCLUSIONS - NeuroQoL reliably captures the key dimensions of the patients' experience of diabetic peripheral neuropathy and is a valid tool for studying the impact of neuropathy and foot ulceration on quality of life.

    Original languageEnglish (US)
    Pages (from-to)2549-2555
    Number of pages7
    JournalDiabetes care
    Volume26
    Issue number9
    DOIs
    StatePublished - Sep 1 2003

    ASJC Scopus subject areas

    • Internal Medicine
    • Endocrinology, Diabetes and Metabolism
    • Advanced and Specialized Nursing

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