Table 2 Three different sets of criteria for the diagnosis of migraine based on information in the questionnaire

I. ICHD-3 modified migraine criteria (restrictive migraine criteria)

 B. Headache attacks lasting < 72 h^a

 C. Headache had usually at least two of the following four characteristics:

  1. Pulsating quality

  2. Unilateral location

  3. Moderate or severe pain intensity

  4. Aggravation by physical activity

 D. During headache, at least one of the following:

  1. Nausea and/or vomiting

  2. Increased sensitivity to light and sound

 B, C and D had to be fulfilled for the diagnosis of restrictive migraine

II. Migraine with aura (restrictive MA)

 Fulfilled the restrictive migraine criteria, and reported visual disturbance prior to or during headache

III. Liberal migraine criteria (definite and probable migraine)

 Self-reported migraine, or fulfilled the restrictive migraine criteria

IV. Lifetime migraine

 Answered “yes” to the question “Have you ever had migraine?”