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>>Well, at the risk of labouring the point, and to make any survey usefull >>(and I think an anonymous survey might be usefull), what do you define as a >>DCI 'hit'? All symptoms ranging from a bit of tingling in the left armpit >>to full blown fulminant cerebral DCI producing death? > >for my excercise I would say let the user decide. If someone has DCI & >denies it the only way I will be informed is if >1. the patient was treated >2. the victim could not deny it but still did not seek treatment. >If you don't have uniform criteria for deciding who is bent, or by how much t>hey are bent, the survey will be of no value whatsover.>>Well, at the risk of labouring the point, and to make any survey usefull >>(and I think an anonymous survey might be usefull), what do you define as a >>DCI 'hit'? All symptoms ranging from a bit of tingling in the left armpit >>to full blown fulminant cerebral DCI producing death? > >for my excercise I would say let the user decide. If someone has DCI & >denies it the only way I will be informed is if >1. the patient was treated >2. the victim could not deny it but still did not seek treatment. > >If you don't have uniform criteria for deciding who is bent, or by how much >they are bent, the survey will be of no value whatsover. > >/rat But how do you determine "how much" a person is bent? If they denied it to themselves will they admit it now? If so how valid is that? What about this criteria: A pain or accepted sympton experienced after a dive not explained by a pre existing symptom. Denial would therefore be "I am not bent but feel a symptom". Regards Richard T ---------------------------- Diver: Do Not Bend ----------------------------- /rat
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