Reliability and Validity of the Greek Migraine Disability Assessment (MIDAS) Questionnaire

Theodora Oikonomidi, Michail Vikelis, Artemios Artemiadis, George P. Chrousos and Christina Darviri ()
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Theodora Oikonomidi: University of Athens
Michail Vikelis: Glyfada Headache Clinic
Artemios Artemiadis: University of Athens
George P. Chrousos: University of Athens
Christina Darviri: University of Athens

PharmacoEconomics - Open, 2018, vol. 2, issue 1, No 8, 77-85

Abstract: Abstract Background The Migraine Disability Assessment (MIDAS) Questionnaire is a reliable and valid instrument for migraine-related disability. Such a tool is needed to quantify migraine-related disability in the Greek population. Objective This validation study aims to assess the test–retest reliability, internal consistency, item discriminant and convergent validity of the Greek translation of the MIDAS. Methods Adults diagnosed with migraine completed the MIDAS Questionnaire on two occasions 3 weeks apart to assess reliability, and completed the RAND-36 to assess validity. Results Participants (n = 152) had a median MIDAS score of 24 and mostly severe disability (58% were grade IV). The test–retest reliability analysis (N = 59) revealed excellent reliability for the total score. Internal consistency was α = 0.71 for initial and α = 0.82 for retest completion. For item discriminant validity, the correlations between each question and the total score were significant, with high correlations for questions 2–5 (range 0.67 ≤ r ≤ 0.79; p

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:spr:pharmo:v:2:y:2018:i:1:d:10.1007_s41669-017-0034-3

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DOI: 10.1007/s41669-017-0034-3

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