PedMIDAS-based scoring underestimates migraine disability on non-school days

Area of Science:

• Pediatric neurology
• Clinical epidemiology
• Migraine research

Background:

• The Pediatric Migraine Disability Assessment (PedMIDAS) is the sole validated tool for assessing pediatric migraine disability.
• Concerns exist that PedMIDAS may underestimate disability during extended school holidays.

Purpose of the Study:

• To compare PedMIDAS-based scores for headaches on school days versus non-school days.
• To evaluate differences in PedMIDAS scores between the school year and summer holiday periods.

Main Methods:

• A prospective cohort study involving 52 migraine patients aged 10-18 years.
• Utilized a 90-day Internet-based headache diary to record daily headache intensity and PedMIDAS-based disability scores.
• Compared headache frequency, intensity, and disability scores across school days, non-school days, the school year, and the summer holiday.

Main Results:

• Headache frequency and intensity ratings showed no significant differences between school days/non-school days or the school year/summer holiday.
• Mean PedMIDAS-based disability scores were significantly higher on school days (0.85) compared to non-school days (0.45) (P < .001).
• Disability scores were significantly higher during the school year (0.73) than the summer holiday (0.46) (P < .016).

Conclusions:

• Daily PedMIDAS scores significantly underestimate headache disability on non-school days, despite similar headache frequency and intensity.
• PedMIDAS assessments during the school year may not be directly comparable to those conducted during summer holidays.
• These discrepancies necessitate careful consideration when utilizing PedMIDAS as an outcome measure in pediatric migraine clinical trials.