Validity and Reliability of the Portuguese Version of the Modified Migraine Disability Assessment

Overview

Journal BMC Neurol

Publisher Biomed Central

Specialty Neurology

Date 2021 Feb 7

PMID 33549045

Citations 1

Authors

Pedro L Ferreira

Isabel Luzeiro

Margarida Lopes

Andre Jorge

Bruno Silva

Lara Ferreira

Affiliations

Soon will be listed here.

Abstract

Background: Migraine Disability Assessment Scale (MIDAS) is a useful tool to measure headache-related disability. Modified MIDAS with 4-week recall period reduces recall bias and improves accuracy of the results. This study aimed at validating mMIDAS in Portuguese.

Methods: Studied population consisted of adult migraine patients attending a headache outpatient clinic. Reliability was assessed by internal consistency and reproducibility in a 3-week test-retest. Content validity was evaluated by two expert panels. Construct validity was tested by comparing mMIDAS-P index in socioeconomic and clinical patient groups and scale unidimensionality was evidenced by factor analysis. Criterion validity was tested using EQ-5D-5L and HADS.

Results: Ninety-two patients, 88% female, mean age of 44 years, participated. They had, in average, 9.7 headache days in previous month, pain averaging 7.5/10. About 69.9% were on a migraine prophylactic treatment, and 42.4% had severe disability; 29.4 and 13.0% showed, respectively, moderate/severe anxiety and depression. Content validity showed that mMIDAS-P is simple and clinically useful. It did not show to be determined by patient's sociodemographic characteristics and it was correlated with depression scale and EQ-5D-5L. Test-retest demonstrated high reproductive reliability and good internal consistency.

Conclusion: mMIDAS-P is valid and reliable. We strongly recommend it for clinical and research use.

Citing Articles

Domitrz I, Golicki D J Clin Med. 2022; 11(23).

PMID: 36498500 PMC: 9740302. DOI: 10.3390/jcm11236925.

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