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Sex and age distribution in subjects with HPPD

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Author: Klaus Podoll, Markus Dahlem, Sofia Greene	15. December 2007
Edited by: Klaus Podoll, Markus Dahlem, Sofia Greene

Sex and age distribution in subjects with HPPD

All 30 subjects were Caucasians. As regards nationality, the majority came from the US (16 subjects), followed by subgroups of subjects from Germany (4 subjects), the UK (4 subjects), Canada (3 subjects), Finland (1 subject), France (1 subject) and Russia (1 subject), respectively.

Thirty of the studied 500 participants in Sofia Greene's internet survey fulfilled the DSM-IV diagnostic criteria of Hallucinogen Persisting Perception Disorder (subjects #2, #32, #34, #72, #89, #91, #95, #97, #98, #99, #100, #101, #103, #114, #115, #119, #190, #191, #199, #237, #245, #260, #268, #371, #404, #434, #437, #442, #446, #490). These 30 subjects comprised 25 males and 5 females (sex ratio male : female 5,0 : 1), indicating a clear preponderance of the male sex. The mean age when first participating in the survey was 26,3 yrs with a range from 16 to 50 yrs (n=30).

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Pre-publication research on migraine with aura