Table 1. Demographic, reproductive and behavioural differences between ovarian cancer cases and controls in the Breast Cancer Family Registry.
| |
Ovarian cancer cases with unaffected sisters (n=109) |
Unaffected sister controls (n=149) |
All ovarian cancer cases (n=389) |
All controls (n=5643) |
|---|---|---|---|---|
| Characteristic | Mean (s.d.)/n (%) | Mean (s.d.)/n (%) | Mean (s.d.)/n (%) | Mean (s.d.)/n (%) |
| Age (years) |
48.4 (12.1) |
46.3 (11.1) |
51.9 (12.3) |
47.9 (16.0) |
|
Race (%) | ||||
| White | 91 (83.5) | 124 (83.2) | 336 (86.4) | 4493 (79.6) |
| Other |
17 (15.6) |
25 (16.8) |
51 (13.1) |
1124 (19.9) |
| Age at menarche (years) |
12.5 (1.4) |
12.9 (1.5) |
12.5 (1.6) |
12.6 (1.5) |
| Height (m) |
1.6 (0.1) |
1.6 (0.1) |
1.6 (0.1) |
1.6 (0.1) |
| BMI (kg m−2) |
25.8 (6.3) |
25.5 (5.7) |
25.6 (5.6) |
25.3 (5.4) |
|
Cigarette use (%) | ||||
| Ever | 29 (26.6) | 42 (28.2) | 142 (36.5) | 2089 (37.0) |
| Never |
78 (71.6) |
104 (69.8) |
241 (62.0) |
3498 (62.0) |
|
Parity (%) | ||||
| 0 | 25 (22.9) | 39 (26.2) | 56 (14.4) | 1403 (24.9) |
| 1 | 10 (9.2) | 12 (8.1) | 32 (8.2) | 714 (12.7) |
| ⩾2 |
74 (67.9) |
97 (65.1) |
301 (77.4) |
3511 (62.2) |
| Age at first birth (years) |
24.5 (4.7) |
24.3 (5.1) |
24.4 (4.4) |
25.3 (5.1) |
| Age at last birth (years) |
30.4 (5.6) |
30.8 (5.1) |
30.7 (5.1) |
30.7 (5.3) |
|
Breastfeeding (%) | ||||
| Yes | 44 (40.4) | 61 (40.9) | 171 (44.0) | 2686 (47.6) |
| No |
56 (51.4) |
74 (49.7) |
157 (40.4) |
2603 (46.1) |
|
Oral contraceptive use (%) | ||||
| Yes | 47 (43.1) | 76 (51.0) | 129 (33.2) | 3328 (59.0) |
| No |
55 (50.5) |
61 (40.9) |
224 (57.6) |
2099 (37.2) |
| Duration of Oral contraceptive use (year) |
3.4 (5.0) |
5.0 (4.7) |
4.6 (5.5) |
5.0 (5.0) |
| Age at first oral contraceptive use (year) | 22.4 (5.2) | 22.8 (5.5) | 23.0 (6.3) | 22.1 (5.4) |