Table 3.

Number of boys and girls among ovarian cancer cases and control subjects and the associated OR with 95% CI

No. girlsNo. boys
Adjusted OR*, (95% CI)Birth year <1935, adjusted OR*, (95% CI)
0123+
0
    Cases9987972121.00 (reference)1.00 (reference)
    Control3,9293,6971,210
1
    Cases1,0371,6965171411.00 (0.94-1.06)1.06 (0.97-1.15)
    Control4,2228,6173,071855
2
    Cases825537146521.03 (0.95-1.11)1.11 (0.99-1.25)
    Control4,1903,3541,060323
3+
    Cases24113948211.13 (0.99-1.28)1.33 (1.10-1.59)
    Control1,595944376215
Adjusted OR*, (95% CI)1.00 (reference)0.92 (0.87-0.98)0.87 (0.80-0.94)0.82 (0.73-0.94)
Birth year <1935, adjusted OR*, (95% CI)1.00 (reference)0.90 (0.82-0.98)0.84 (0.75-0.94)0.85 (0.70-1.01)
  • * Data are adjusted for age at diagnosis or enrollment, age at first childbirth, parity, education level closest to age 40, and area of residence closest to age 40.

  • P value from test for trend was <0.001 for number of boys and 0.16 for number of girls.

  • P value from test for trend was 0.004 for number of boys and 0.006 for number of girls.