Table A.1.

Question 1: Have you ever lost consciousness or fallen and lost consciousness? Question 2: Have you ever been told that while you were unconscious your arms and legs shake or stretch out? Question 3: Have you ever had attacks in which you fall and bite your tongue or lost control of your bladder or bowels? Question 4: Have you ever had uncontrollable attacks of shaking or trembling in one arm or leg or in the face without losing consciousness? Question 5: Have you ever had attacks of numbness, tingling in one arm or leg without losing consciousness? Question 6: Have you ever had attacks in which you lose contact with the surroundings without losing consciousness? Question 7: Have you ever had attacks of losing awareness that was associated with a feeling of vagueness, unreality or dreaminess or experience of abnormal smells, sounds, or vision without losing consciousness? Question 8: Have you ever had episodes of strange behaviour without remembering it? Question 9: Have you ever been told that you have or had epilepsy or epileptic fits?
Generalized seizures	1 AND (2 OR 3)
Focal seizures†	4 OR 6 OR 7 OR 8
Simple partial seizures‡	4 AND NOT (6 OR 7 OR 8)
Complex-partial seizures	(6 OR 7 OR 8) AND NOT 4
Unspecified seizures	9 AND NOT (generalized seizures or focal seizures)
Any type of seizures	At least one of the above four types

† Originally, question 5 was also considered for definition of focal seizures, but due to its low specificity, the question was removed from the analysis.

‡ Simple partial motor seizures.