Skip to main content
. Author manuscript; available in PMC: 2012 May 1.
Published in final edited form as: Aviat Space Environ Med. 2011 Nov;82(11):1067–1070. doi: 10.3357/asem.3090.2011

Table II.

Dynamic Cohort Characteristics.

Person
Years of
Follow-up		 n Mean
(Yr)		 S.D. p value T-value Degrees of
freedom		 Youngest
Age (yr)		 Oldest
Age
(yr)		 Birth Year
Range
Aviators 375,222 40,314 9.92 5.12 <0.0001 11.13 106,286 35 80 1923-1973
Non-
Aviators 		590,745 65,974 9.54 5.56 35 79