The Development and Validation of a Neuropathy- and Foot Ulcer-Specific Quality of Life Instrument Academic Article uri icon

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.

authors

  • Vileikyte, L
  • Peyrot, M
  • Bundy, C
  • Rubin, RR
  • Leventhal, H
  • Mora, P
  • Shaw, JE
  • Baker, P
  • Boulton, AJM

publication date

  • September 1, 2003