Table 1.

Percent distribution of individuals with migraine who completed both Migraine Disability Assessment (MIDAS) questionnaires by demographic and headache features obtained during the baseline telephone interview compared with the sample of all population-based individuals with migraine eligible for the US and UK reliability studies, 1997–1998

VariableCategoryUnited StatesUnited Kingdom
MIDAS participants (n = 97)All migraine cases (n = 945)MIDAS participants (n = 100)All migraine cases (n = 767)
GenderMale16.521.620.021.5
Female83.578.480.078.5
Age, y18–246.213.28.010.6
25–3426.826.823.025.6
35–4439.234.733.031.4
45–5527.823.836.031.6
Not stated0.01.40.00.8
Frequency of most severe headache (per year)<618.629.442.038.3
6–1224.723.929.031.3
13–2415.517.19.010.6
25+41.229.416.015.6
Not stated0.00.14.04.2
Average duration of most severe headache, h<514.427.413.017.1
5–2449.541.630.040.3
25+36.125.057.040.7
Not stated0.06.00.01.9
Nausea with most severe headacheNever or rarely28.943.821.016.3
Less than half the time16.516.712.015.2
Half the time or more54.639.567.067.7
Not stated0.00.00.00.8
Sensitivity to light with most severe headacheNever or rarely9.325.315.015.5
Less than half the time5.212.06.07.2
Half the time or more85.662.179.076.3
Not stated0.00.50.01.0
Pulsatile pain with most severe headacheNever or rarely6.218.223.017.9
Less than half the time8.214.59.08.5
Half the time or more85.653.568.072.2
Not stated0.013.80.01.4