Validation of the Korean Version of the Walking Impairment Questionnaire in Patients With Peripheral Arterial Disease

Study Overview
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Brief Summary
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The aim of the study is to validate the Korean version of Walking Impairment Questionnaire in patients with peripheral arterial occlusive disease.

Detailed Description
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First, the original version of WIQ will be translated into Korean, then it will be translated into English, again. The translated version will be sent to the original author to compare with the original version. After correcting, the Korean version will be completed. The patients with peripheral arterial disease will fill in the Korean version of WIQ before starting treatments. Baseline results of arterial function test, toe-brachial index and treadmill test will be recorded. Three months later, the patients will complete the questionnaire again. Arterial function test, toe-brachial index and treadmill test also will be taken again after treatment and the correlation of WIQ and other exams will be evaluated.

Official Title
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Validation of the Korean Version of the Walking Impairment Questionnaire in Patients With Peripheral Arterial Disease

Conditions
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Peripheral Arterial Occlusive Disease

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 19  80 years claudication Ankle brachial index < 0.9 or TBI < 0.7 (in patients with DM and ABI higher than 1.3) patients who can complete the treadmill test (slope 12%, 2.4km/hr) Exclusion Criteria: critical limb ischemia Ankle pressure < 40mmHg claudication due to other causes (i.e. spinal stenosis, arthritis, etc) patients with high risk of coronary artery syndrome during treadmill test

Ages Eligible for Study
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Minimum Age: 19 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Medical treatment<br>only medical treatment (regardless of the kinds of medicine) | |
| Surgical or endovascular treatemnt group<br>patients underwent surgery or endovascular therapy | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Reproducibility of Korean version Walking Impairment Questionnaire | To test reliatbility of WIQ Korean ver., reproducibility of the test was assessed by test-retest procedure of the baseline and 1month afterwards (intraclass correlation coefficient) | One month | 
| Correlation of WIQ score improvement and change in ABI and treadmill test results | Correlation between changes in WIQ score and changes in ABI or treadmill test results (before and after surgical / radiological or pharmacological intervention) were assessed by Pearson's correlation test | 3 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Walking Impairment Questionnaire, Peripheral arterial occlusive disease, Korean version