Measuring the impact of migraine: a systematic review of the measurement properties of MIDAS, HIT-6, and MSQoL

Migraine is a leading cause of global disability. Valid, reliable instruments are essential for quantifying its impact. The Migraine Disability Assessment (MIDAS), Headache Impact Test (HIT-6), and Migraine-Specific Quality-of-Life questionnaire (MSQoL) are widely used, yet their comparative measurement properties across populations remain insufficiently characterized.

To systematically review and compare the measurement properties of MIDAS, HIT-6, and MSQoL following the Consensus-Based Standards for the Selection of Health Measurement Instruments (COSMIN) methodology.