DALYs	disability-adjusted life-years
QALY	quality-adjusted life years
PROMs	patient-reported outcome measures
HRQoL	health-related quality of life
SF-36	Short-Form 36-item health profile
HIT-6	6-item Headache Impact Test
AIM-D	Activity Impairment in Migraine Diary
mMIDAS-P	modified Migraine Disability Assessment in Portuguese population
WPAI	Work Productivity and Activity Impairment Questionnaire
HAD	Hospital Anxiety and Depression scale
EQ-5D	EuroQoL five-dimension questionnaire
EQ-5D-3L	EuroQoL five-dimension questionnaire three-level
EQ-5D-5L	EuroQoL five-dimension five-level
VAS	visual analogue scale.
MO	mobility
SC	self-care
UA	usual activities
PD	pain/discomfort
AD	anxiety/depression
ICHD	International Classification of Headache Disorders
EM	episodic migraine
CM	chronic migraine