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Table 1 Demographics of the study population stratified by dioxin level

From: Serum dioxin and DNA methylation in the sperm of operation ranch hand veterans exposed to Agent Orange

  Control (N = 11) Low (N = 4) Medium (N = 11) High (N = 11) All (N = 37)
Age [Mean (SD)] 70.7 (6.8) 79.5 (10.4) 77.0 (8.5) 68.9 (4.1) 73.0 (7.9)
Smoking: Never [N (%)] 2 (18.2) 1 (25.0) 3 (27.3) 4 (36.4) 10 (27.0)
Smoking: Former [N (%)] 8 (72.7) 3 (75.0) 7 (63.6) 5 (45.5) 23 (62.2)
Smoking: Current [N (%)] 1 (9.1) 0 (0.0) 1 (9.1) 2 (18.2) 4 (10.8)
BMI [Mean (SD)]] 32.4 (5.7) 25.7 (1.8) 30.9 (3.7) 29.6 (3.6) 30.4 (4.5)
Dioxin [Mean (SD), Range] (ppt) 4.3 (1.4), 2.2–7.1 6.5 (0.8), 5.6–7.2 13.4 (3.3), 8.9–19.6 61.1 (46.2), 26.6–167.6 24.1 (34.7), 2.2–167.6