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Table 3 Demographics of the Camp Lejeune and Camp Pendleton cohorts

From: Evaluation of mortality among marines and navy personnel exposed to contaminated drinking water at USMC base Camp Lejeune: a retrospective cohort study

Factor Camp Lejeune Camp Pendleton
N = 154,932 N = 154,969
Male 94.8% 96.4%
Female 5.2% 3.6%
“White” 73.1% 77.6%
African American 24.2% 17.0%
“other” or unknown 2.7% 5.4%
Median age, start of follow-up 20 20
Median age, end of follow-up 49 49
% ≥55 yrs, end of follow-up 2.7% 3.2%
Not a high school graduate 11.3% 14.7%
High school graduate 84.9% 80.5%
College graduate 3.8% 4.8%
Enlisted 96.4% 95.5%
Officer 3.6% 4.5%
Median months active duty service 36 35
Total deaths 8,964 (5.8%) 9,365 (6.0%)
% deaths occurring >1995 55.5% 54.7%
Total lost to follow-up 1,990 (1.3%) 2,339 (1.5%)
Total person-years of follow-up 4.14 million 4.19 million