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Reliability, validity, and clinical utility of the Migraine-ACT questionnaire
Shaun G Kilminster1, Andrew J Dowson, Stewart J Tepper
1Institute of Naval Medicine, Alverstoke, Hampshire, UK.
Headache
|April 29, 2006
Summary
The Migraine-ACT questionnaire reliably identifies patients needing acute migraine treatment changes. A score of 2 or less suggests a need for medication adjustment, impacting about 40% of patients.
Area of Science:
- Neurology
- Clinical Assessment Tools
- Migraine Management
Background:
- The 4-item Migraine-ACT questionnaire aids primary care physicians in identifying patients requiring acute migraine treatment adjustments.
- It is recognized for its ease of use, reliability, and accuracy.
Purpose of the Study:
- To conduct an in-depth analysis of the Migraine-ACT study database.
- To provide further data on the questionnaire's reliability, validity, and clinical utility.
Main Methods:
- Assessed test-retest reliability using scores from baseline and 1-week follow-up.
- Evaluated validity by comparing t-discrimination values and constructing an alternative Form B questionnaire.
- Determined clinical utility by correlating Migraine-ACT scores with SF-36, MIDAS, and MTAQ questionnaires.
Main Results:
- Demonstrated high test-retest reliability (r=.81 total sample, r=.61-.92 by country).
- Migraine-ACT questions showed superior validity (t-discrimination) compared to other migraine study endpoints.
- A Migraine-ACT score ≤2 indicated a need to consider medication changes, with ~40% of patients scoring ≤2.
Conclusions:
- The Migraine-ACT questionnaire exhibits excellent reliability and validity.
- Findings support its practical application in clinical settings for migraine management.
