Table 1. Descriptive characteristics of EOC cases and controls in the New England-based case–control study.
| Population characteristics | Cases | Controls |
|---|---|---|
| Participants, N |
1872 |
1978 |
|
Means (s.d.) | ||
| Age (years)a | 52.5 (12.3) | 52.4 (12.5) |
| Duration of oral contraceptive use (years)b | 4.7 (4.8) | 5.7 (5.0) |
| BMI (kg m–2) | 26.4 (6.1) | 26.0 (5.5) |
| Total calories (kcal) |
1925.1 (587.7) |
1887.5 (575.4) |
|
Percentages | ||
| Parous | 67.6 | 82.4 |
| Postmenopausal | 52.8 | 53.0 |
| History of tubal ligation | 13.6 | 19.7 |
| History of endometriosisc | 9.3 | 7.8 |
| Family history of ovarian cancer |
4.8 |
2.7 |
|
Means (s.d.)d | ||
| Total fat (g day–1) | 55.3 (10.9) | 55.7 (10.9) |
| Vegetable fat (g day–1) | 25.2 (8.1) | 25.3 (8.2) |
| Animal fat (g day–1) | 30.1 (9.8) | 30.4 (9.6) |
| Trans fat (g day–1) | 2.1 (0.7) | 2.1 (0.7) |
| Saturated fat (g day–1) | 19.3 (4.8) | 19.4 (4.7) |
| Long chain omega-3 (n−3)e (g day–1) | 0.3 (0.2) | 0.3 (0.3) |
| Long chain omega-3 (n−3)f (g day–1) | 0.3 (0.3) | 0.3 (0.3) |
| Omega-6 (n−6)e (g day–1) | 9.0 (2.4) | 9.2 (2.5) |
| Omega-6 (n−6)f (g day–1) | 9.0 (2.4) | 9.2 (2.5) |
Abbreviations: EOC=epithelial ovarian cancer; N=number; n−3=omega-3; n−6=omega-6.
a
Cases and controls were frequency matched on age.
b
Duration of oral contraceptive use among ever users.
c
Endometriosis was self-reported and not surgically confirmed.
d
Reported values are the energy-adjusted nutrient intakes.
e
Intakes are from foods only.
f
Intakes are from foods plus supplements.