Validity
migraine headache, CM
MIGRAINE HEADACHE
At baseline, all the correlations between WPAI domain scores and continuous anchor variables exceeded the recommended threshold of ≥ 0.30, except for WPAI domain scores with the number of monthly migraine headache days in the overall population, and in patients with EM or CM. In patients with EM, the correlation between WPAI non-work-related activity impairment and MSQ-RFR was moderate-to-high (−0.606, Additional file 