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Topic: what's the odds?? (Read 264 times) |
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dougW
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what's the odds??
« on: Aug 23rd, 2007, 12:18am » |
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From the latest issue of Cephalalgia )abstract only)
Volume 27 Issue 9 Page 1014-1019, September 2007
Prevalence of cluster headache in a population-based sample in Germany
Z Katsarava, M Obermann , M-S Yoon , P Dommes , J Kuznetsova , C Weimar & HC Diener
Department of Neurology, University Hospital Essen, Essen, Germany
A population-based sample of 6000 inhabitants of the city of Essen in Germany was screened using a standard questionnaire for possible cluster headache (CH). Fifty-six percent responded (N = 3336, 50.5% of them women, mean age 44.7 ± 12.7 years). All suspected cases (N = 182) were interviewed by a neurologist. Four subjects with CH (three men) were identified. The 1-year prevalence of CH was estimated to be 119/100 000 (95% confidence interval 3, 238/100 000).
Hmmm. 6000 surveys, 3336 respondents. Can we assume the other 49.5% don't have headaches at all?
And off the suspected cases (182) only 4 confirmed cases of CH.
The numbers seem "suspect". 
Doug
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It doesn't sound that far off does it ? That's less than 1 in 1,000 people with 3 out of 4 being male. Although, there's no way to be totally sure, I would think that those who didn't respond, weren't interested in the survey and probably had no problems with headaches.
It does kind of sound like 'useless information' though.
PF Wishes
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