Table 1 Selected characteristics of women participating in the NJ Ovarian Cancer Study.

   High school or less

1.00 (Ref)

   College

0.90 (0.59-1.38)

   Graduate school

0.76 (0.47-1.24)

Race/ethnicity

   White

1.00 (Ref)

   Black

1.02 (0.42-2.44)

   Other

0.82 (0.33-1.99)

   Hispanic (any race)

1.13 (0.44-2.92)

BMI

   Underweight (< 18.5)

1.02 (0.06-17.31)

   Normal (18.5-25)

1.00 (Ref)

   Overweight (25-29.9)

1.07 (0.69-1.65)

   Obese (30-34.9)

1.39 (0.83-2.32)

   Very obese (≥ 35)

1.54 (0.81-2.89)

Parity

   0 - 1

1.00 (Ref)

   2

0.45 (0.29-0.69)

   ≥ 3

0.42 (0.26-0.66)

Smoking status

   Never

1.00 (Ref)

   Past

1.12 (0.76-1.64)

   Current

0.87 (0.46-1.62)

Oral contraceptive use

   Never

1.00 (Ref)

   Ever

0.88 (0.61-1.28)

Use of HRT

   Never

1.00 (Ref)

   Unopposed E only

1.56 (0.86-2.84)

   Any combined HRT

0.63 (0.38-1.06)

Age at menarche

   > 13

0.81 (0.51-1.27)

   12-13

1.00 (Ref)

   ≤11

0.75 (0.48-1.17)

Menopause status

Premenopausal

1.51 (0.85-2.69)

Postmenopausal

   Age at menopause

   < 40

0.77 (0.26-2.31)

   41-54

1.00 (Ref)

   ≥ 55

0.99 (0.48-2.01)

   Unknown

1.52 (0.91-2.56)

Tubal Ligation

   No

1.00 (Ref)

   Yes

0.59 (0.36-0.94)

First relative with ovarian cancer

   No

1.00 (Ref)

   Yes

1.32 (0.55-3.17)