Table 1 Mean (±s.d.) daily consumption of dairy products and lactose intake in the subcohort (n=2216), according to potential risk factors for ovarian cancer (recorded at baseline), Netherlands Cohort Study on Diet and Cancer, 1986–1997
From: Dairy consumption and ovarian cancer risk in the Netherlands Cohort Study on Diet and Cancer
Total dairy | Lactose | ||
|---|---|---|---|
Characteristics | n (%) | Mean (±s.d.) a | Mean (±s.d.) a |
Age (years) | |||
55–59 | 860 (38.8) | 304.5 (196.1) | 14.6 (8.5) |
60–64 | 744 (33.6) | 298.1 (179.6) | 14.3 (7.8) |
65–69 | 612 (27.6) | 293.4 (188.2) | 14.3 (8.3) |
Ever use of oral contraceptives | |||
No | 1643 (75.1) | 293.4 (190.8) | 14.2 (8.3) |
Yes | 545 (24.9) | 319.6 (180.1) | 15.3 (8.0) |
Ever use of (post)menopausal hormone therapy | |||
No | 1838 (86.9) | 296.2 (188.1) | 14.3 (8.2) |
Yes | 277 (13.1) | 318.2 (189.3) | 15.2 (8.2) |
Parity | |||
0 children | 398 (18.2) | 298.9 (189.3) | 14.2 (8.1) |
1 child | 179 (8.2) | 296.2 (191.8) | 14.6 (8.8) |
2 children | 472 (21.6) | 301.3 (193.5) | 14.2 (8.4) |
>2 children | 1136 (52.0) | 298.7 (184.2) | 14.5 (8.0) |
Hysterectomy | |||
No | 1838 (82.9) | 296.4 (189.4) | 14.3 (8.3) |
Yes | 378 (17.1) | 313.5 (183.8) | 15.0 (8.1) |
Family history of ovarian and/or breast cancer b | |||
No | 2023 (91.3) | 301.0 (188.7) | 14.5 (8.3) |
Yes | 193 (8.7) | 281.2 (185.3) | 13.5 (8.0) |
Tubal ligation | |||
No | 2206 (99.6) | 299.2 (188.7) | 14.4 (8.2) |
Yes | 10 (0.4) | 310.7 (138.1) | 14.5 (5.4) |
Age at menarche (years) | |||
⩽12 | 569 (26.0) | 293.3 (183.7) | 14.0 (8.0) |
13–14 | 995 (45.4) | 303.3 (190.1) | 14.6 (8.4) |
⩾15 | 626 (28.6) | 300.5 (188.4) | 14.6 (8.1) |
Age at menopause (years) | |||
⩽44 | 327 (15.8) | 279.3 (182.2) | 13.6 (8.0) |
45–49 | 671 (32.5) | 300.6 (185.8) | 14.6 (8.1) |
50–54 | 910 (44.0) | 308.1 (193.3) | 14.8 (8.5) |
⩾55 | 158 (7.7) | 291.2 (185.5) | 14.2 (8.3) |
Current cigarette smoking | |||
No | 1746 (78.8) | 304.3 (184.8) | 14.6 (8.0) |
Yes | 470 (21.2) | 280.5 (200.6) | 13.8 (8.9) |
Socioeconomic status (highest level of education) | |||
Primary school | 741 (33.6) | 301.2 (182.7) | 14.7 (8.1) |
Lower vocational school | 511 (23.2) | 284.4 (176.6) | 13.9 (7.7) |
High school/intermediate vocational school | 760 (34.5) | 301.3 (199.8) | 14.3 (8.7) |
Higher vocational school/University | 191 (8.7) | 322.2 (189.8) | 15.1 (8.2) |
Height (in cm) | |||
<160 | 510 (23.7) | 272.2 (180.0) | 13.2 (7.8) |
160–164 | 403 (18.7) | 282.9 (193.4) | 13.7 (8.7) |
164–167 | 428 (19.9) | 314.2 (183.9) | 15.1 (7.9) |
167–170 | 441 (20.5) | 299.8 (186.6) | 14.6 (8.3) |
>170 | 373 (17.3) | 333.4 (193.0) | 15.8 (8.4) |
