作者: Karin S Coyne , Mary Kay Margolis , Kim A Gilchrist , Susan P Grandy , William R Hiatt
DOI: 10.1016/S0741-5214(03)00312-4
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摘要: Abstract Background Intermittent claudication resulting from peripheral arterial disease (PAD) can substantially impair walking function. The Walking Impairment Questionnaire (WIQ) assesses patient self-reported difficulty in walking. Currently this questionnaire is validated for interviewer administration only. Since be burdensome a large clinical trial, we examined the effects of alternative methods on responses WIQ. Methods WIQ, which consists four subscales (pain severity, distance, speed, stairs), was modified to self-administered or interviewer-administered by telephone. Patients with PAD were recruited two sites and randomized into groups: group 1 WIQ self-administered, then telephone-administered; 2 telephone-administered, self-administered. administrations occurred 4 7 days apart. Additional measures (SF-36, EQ-5D, symptom scale) data included further assess validity symptoms patients claudication. Telephone interviews conducted trained interviewers using standardized scripts. Two-week test-retest reliability assessed both (group 1) telephone-administered 2). Results Sixty at (n = 30 per group). Seventy-eight percent men; mean age 67.1 years; 83% white. Mean duration 6.8 years. No significant differences observed subscale scores between self telephone administration. interaction order method detected. Cronbach α stair-climbing ranged 0.82 0.94. Correlations among scale good ( r −0.34 −0.57). physical health SF-36 0.24-0.59) higher than mental health–related 0.08-0.26). Conclusions demonstrated These results suggest that versions used reliably efficiently trials.