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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