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A comment on Parachute use to prevent death and major trauma when jumping from aircraft. Parent comment

Re:Parachute use to prevent death and major trauma when jump... by conistonwater on Friday December 14, 2018 @06:22AM (#18680058)
> The relevance to parachute use is that individuals jumping from aircraft without the help of a parachute are likely to have a high prevalence of pre-existing psychiatric morbidity. Individuals who use parachutes are likely to have less psychiatric morbidity and may also differ in key demographic factors, such as income and cigarette use. It follows, therefore, that the apparent protective effect of parachutes may be merely an example of the “healthy cohort” effect.
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