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Diabetes Care. 2003 Sep;26(9):2549-55.

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

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  • 1Departments of Medicine and Behavioral Science, Manchester Royal Infirmary, Manchester, UK. lvileikyte@med.miami.edu

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 (alpha = 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.

PMID:
12941717
[PubMed - indexed for MEDLINE]
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