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Τρίτη 15 Ιανουαρίου 2019

Mortality of US astronauts: comparisons with professional athletes

Objective

Studies of mortality among US astronauts are complicated by the healthy worker effect, which predicts lower mortality for astronauts than the general population based solely on the ability to become and remain an astronaut. We attempt to evaluate astronaut mortality risk while accounting for the healthy worker effect.

Methods

We compare mortality rates of male US astronauts with those of professional athletes from Major League Baseball and the National Basketball Association between January 1, 1960 and May 31, 2018.

Results

Both athlete cohorts and astronauts had significantly lower-than-expected mortality in comparison with the general population. For the overall study period, there were no significant differences in all-cause mortality rates between astronauts and athletes. Astronauts were at greater risk of death from external causes (SMR=583; 95% CI 377 to 860) and reduced risk of death from cardiovascular disease (SMR=39; 95% CI 18 to 73) and all natural causes (SMR=67; 95% CI 47 to 93).

Conclusions

The data presented here do not support increased mortality for astronauts due to unique exposures received in space. The mortality experience of astronauts as compared with professional baseball and basketball players should be re-examined periodically as part of the ongoing surveillance of astronaut mortality in years to come.



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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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