Table 1 Clinical characteristics for the study population

EOC status

  Control

66 (50.0%)

148 (50.0%)

214 (50.0%)

  Case

66 (50.0%)

148 (50.0%)

214 (50.0%)

Age

  Mean (SD)

60 (12)

63 (13)

62 (13)

  Median

61

65

64

  Q1, Q3

50, 69

54, 73

52, 72

  Range

(33–82)

(27–91)

(27–91)

Year enrolled

  1999–2002

18 (13.6%)

164 (55.4%)

182 (42.5%)

  2003

10 (7.6%)

36 (12.2%)

46 (10.7%)

  2004

41 (31.1%)

33 (11.1%)

74 (17.3%)

  2005

25 (18.9%)

23 (7.8%)

48 (11.2%)

  2006–2007

38 (28.8%)

40 (13.5%)

78 (18.2%)

Parity, number of births

  Nulliparous

24 (18.2%)

42 (14.2%)

66 (15.4%)

  1-2,<=20 yrs

7 (5.3%)

14 (4.7%)

21 (4.9%)

  1-2,>20 yrs

31 (23.5%)

84 (28.4%)

115 (26.9%)

  3+,<=20 yrs

28 (21.2%)

47 (15.9%)

75 (17.5%)

  3+,>20 yrs

40 (30.3%)

95 (32.1%)

135 (31.5%)

Smoking status (current)

  No

120 (90.9%)

259 (87.5%)

379 (88.6%)

  Yes

10 (7.6%)

19 (6.4%)

29 (6.8%)

State

  Other

68 (51.5%)

120 (40.5%)

188 (43.9%)

  Minnesota

64 (48.5%)

176 (59.5%)

240 (56.1%)

Alcohol consumption

  Never

32 (24.2%)

71 (24.0%)

103 (24.1%)

  Current

78 (59.1%)

152 (51.4%)

230 (53.7%)

  Former

18 (13.6%)

47 (15.9%)

65 (15.2%)

Histology

  Serous

43 (65.2%)

98 (66.2%)

141 (65.9%)

  Mucinous

1 (1.5%)

4 (2.7%)

5 (2.3%)

  Endometrioid

16 (24.2%)

33 (22.3%)

49 (22.9%)

  Clear Cell

4 (6.1%)

9 (6.1%)

13 (6.1%)

  Other

2 (3.0%)

4 (2.7%)

6 (2.8%)

Grade

  Grade 1

1 (1.6%)

9 (6.1%)

10 (4.7%)

  Grade 2

10 (15.6%)

21 (14.2%)

31 (14.6%)

  Grade 3

32 (50.0%)

79 (53.4%)

111 (52.4%)

  Grade 4

21 (32.8%)

39 (26.4%)

60 (28.3%)

Stage

  Stage 1

11 (16.7%)

29 (19.6%)

40 (18.7%)

  Stage 2

3 (4.5%)

11 (7.4%)

14 (6.5%)

  Stage 3

43 (65.2%)

84 (56.8%)

127 (59.3%)

  Stage 4

9 (13.6%)

24 (16.2%)

33 (15.4%)