Validity and reliability of the Portuguese version of the modified Migraine Disability Assessment.

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, m

SUBMITTER: Ferreira PL 

PROVIDER: S-EPMC7866748 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature