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Relationship Between Carbon Dioxide Levels and Reported Headaches on the International Space Station

Journal of Occupational and Environmental Medicine: September 2014 - Volume 56 - Issue 9 - p e82
doi: 10.1097/JOM.0000000000000268
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In a recently published article by Law et al,1 there was one error in the Discussion section. In the fourth paragraph on page 482, the threshold average 7-day CO2 concentration to keep the risk of headache below 1% should be 2.5 mmHg, not 1.97 mmHg.

The authors apologize for the error.


1. Law J, Van Baalen M, Foy M, et al. Relationship between carbon dioxide levels and reported headaches on the international space station. J Occup Environ Med. 2014;56:477–483.
Copyright © 2014 by the American College of Occupational and Environmental Medicine