Table 1.

Characteristics of study population

CharacteristicsBreast cancerColorectal cancerEndometrial cancerOvarian cancer
SubcohortacasescasesSubcohortCasesSubcohortCases
n = 3,120n = 922n = 269n = 2,636n = 180n = 2,826n = 104
Age (years)
 Median (IQR)59 (48–71)53 (44–64)65 (52–72)59 (48–71)55 (47–65)58 (48–70)55 (44–65)
BMI
 Median (IQR)23.7 (21.5–26.3)23.7 (21.7–26.5)23.9 (21.9–26.2)23.6 (21.5–26.3)25.4 (23.5–30.3)23.6 (21.5–26.3)23.6 (21.5–26.9)
Educational status n (%)
 High school or less75 (2.4)23 (2.2)11 (4.1)57 (2.1)2 (1.1)64 (2.3)4 (3.9)
 Post-secondary/some college1820 (58.3)605 (57.4)146 (54.3)1526 (57.9)99 (55.0)1649 (58.1)55 (52.3)
 Graduate school1225 (39.3)427 (40.5)112 (41.6)1053 (40.0)79 (43.9)1124 (39.6)45 (43.3)
Family history of breast cancer n (%)
 Yes314 (10.1)143 (13.5)265 (10.1)18 (10.0)285 (10.1)11 (10.6)
 No2806 (89.9)912 (86.5)2371 (90.0)162 (90.0)2541 (89.9)93 (89.4)
Smoking status n (%)
 Never1687 (54.1)576 (54.6)138 (51.3)1424 (54.0)105 (58.3)1524 (53.9)45 (43.3)
 Former1217 (39.0)403 (38.2)111 (41.3)1030 (39.1)60 (33.3)1104 (39.1)51 (49.0)
 Current211 (6.8)75 (7.1)19 (7.1)177 (6.7)13 (7.2)194 (6.9)8 (7.7)
 Missing5 (0.2)1 (0.1)1 (0.1)5 (0.2)2 (1.1)4 (0.1)0 (0.0)
Physical activity
 Median (IQR)13.5 (1.4–27.1)13 (5.3–25.8)11.8 (3.3–23.0)13.5 (4.0–26.8)11.2 (5.7–25.7)14.0 (4.3–27.5)12.4 (4.2–25.1)
Hormone therapy use n (%)
 Yes1079 (34.4)334 (31.7)727 (27.8)59 (32.8)846 (29.9)40 (38.5)
 No2055 (65.6)721 (68.3)1909 (72.4)121 (67.2)1980 (70.1)64 (61.5)
Age at menopause
 Median (IQR)50 (45–52)50 (45–53)50 (48–53)51(48–53)50 (46–52)50 (44–52)
DED (kcal/g)
 Median (IQR)1.3 (1.1–1.5)1.3 (1.1–1.5)1.3 (1.1–1.5)1.3 (1.1–1.5)1.3 (1.2–1.5)1.3 (1.1–1.5)1.3 (1.1–1.5)
  • aSubcohort for breast and colorectal cancer.