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

PharmacoEconomics Open
Theodora OikonomidiChristina Darviri

Abstract

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. This validation study aims to assess the test-retest reliability, internal consistency, item discriminant and convergent validity of the Greek translation of the MIDAS. 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. 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 < 0.01). For convergent validity, there was significant negative correlation between the total score and all RAND-36 subscales except for 'emotional wellbeing'. The negative correlation indicates that patients with a lower degree of disabili...Continue Reading

References

Apr 24, 1999·Cephalalgia : an International Journal of Headache·W F StewartJ Sawyer
Nov 22, 2000·JAMA : the Journal of the American Medical Association·R B LiptonUNKNOWN Disability in Strategies of Care Study group
Feb 15, 2002·Cephalalgia : an International Journal of Headache·D D'AmicoG Bussone
Aug 28, 2004·Headache·Mustafa ErtaşUNKNOWN Turkish MIDAS group
Jul 29, 2005·Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation·Evelina PappaDimitris Niakas
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Jun 19, 2013·Cephalalgia : an International Journal of Headache·UNKNOWN Headache Classification Committee of the International Headache Society (IHS)

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Citations

Dec 15, 2019·The Journal of Headache and Pain·Evangelos KouremenosUNKNOWN Hellenic Headache Society

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Software Mentioned

MIDAS
SPSS

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