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Table 1 Characteristics of the cases and controls

From: Evaluation of contaminated drinking water and male breast cancer at Marine Corps Base Camp Lejeune, North Carolina: a case control study

Characteristic Controls Cases OR (95 % CI)
# % # %
Age at diagnosis, in yearsa
<50 31 8.3 5 7.0 1.00 (ref.)
≥50 - <60 72 19.3 22 31.0 1.89 (0.68-6.05)
≥60 - <80 241 64.6 40 56.3 1.03 (0.40-3.14)
≥80 29 7.8 4 5.7 0.86 (0.19-3.71)
Ethnicitya
Not Hispanic 362 97.1 67 94.4 1.00 (ref.)
Hispanic 11 2.9 4 5.6 1.96 (0.53-6.16)
Racea
White 345 92.7 55 78.6 1.00 (ref.)
Black/otherb 27 7.3 15 21.4 3.49 (1.74-6.96)
Rankc
Officer 9 2.4 1 1.4 1.00 (ref.)
Enlisted 364 97.6 70 98.6 1.73 (0.28-38.78)
Served in Vietnamc
No 288 77.2 40 56.3 1.00 (ref.)
Yes 85 22.8 31 43.7 2.62 (1.54-4.45)
Alcoholismd
No 251 77.7 49 74.2 1.00 (ref.)
Yes 72 22.3 17 25.8 1.21 (0.64-2.21)
Thyroid disorderd
No 295 91.3 63 95.5 1.00 (ref.)
Yes 28 8.7 3 4.5 0.50 (0.12-1.55)
Endocrine/metabolic/immune diseased
No 90 27.9 8 12.1 1.00 (ref.)
Yes 233 72.1 58 87.9 2.79 (1.33-6.49)
Diabetesd
No 246 76.2 36 54.5 1.00 (ref.)
Yes 77 23.8 30 45.5 2.66 (1.53-4.60)
Obesityd
No 299 92.6 56 84.9 1.00 (ref.)
Yes 24 7.4 10 15.2 2.22 (0.97-4.84)
Cholelithiasisd
No 301 93.2 64 97.0 1.00 (ref.)
Yes 22 6.8 2 3.0 0.43 (0.07-1.62)
Diseases of the male genital organsd
No 235 72.8 48 72.7 1.00 (ref.)
Yes 88 27.2 18 27.3 1.00 (0.54-1.80)
Orchitis/epididymitisd
No 319 98.8 65 98.5 1.00 (ref.)
Yes 4 1.2 1 1.5 1.23 (0.05-9.94)
Gynecomastiad
No 321 99.4 57 86.4 1.00 (ref.)
Yes 2 0.6 9 13.6 25.01 (5.78-173.64)
Osteoporosisd
No 293 90.7 59 89.4 1.00 (ref.)
Yes 30 9.3 7 10.6 1.16 (0.45-2.68)
Fracturesd
No 302 93.5 57 86.4 1.00 (ref.)
Yes 21 6.5 9 13.6 2.27 (0.94-5.14)
Liver diseased
No 296 91.6 59 89.4 1.00 (ref.)
Yes 27 8.4 7 10.6 1.30 (0.55-3.04)
Non-alcoholic liver diseased
No 313 96.9 63 95.5 1.00 (ref.)
Yes 10 3.1 3 4.5 1.49 (0.32-5.30)
MOSe, possible EMFf exposurec
No 368 98.7 68 95.8 1.00 (ref.)
Yes 5 1.3 3 4.2 3.25 (0.76-13.91)
MOSe, possible solvent exposurec
No 274 73.5 50 70.4 1.00 (ref.)
Yes 99 26.5 21 29.6 1.16 (0.67-2.03)
Birth cohorta
≤1925 90 24.1 8 11.3 1.00 (ref.)
1926-1935 121 32.4 16 22.5 1.49 (0.61-3.63)
1936-1945 66 17.7 14 19.7 2.39 (0.95-6.02)
1946-1950 60 16.1 21 29.6 3.94 (1.64-9.47)
≥1950 36 9.7 12 16.9 3.75 (1.42-9.94)
  1. aobtained from VACCR; bincludes 2 controls who were “other” race; cobtained from NPRC; dobtained from PTF; eMilitary Occupational Specialty; fElectromagnetic fields