| Cases | Controls | Pvalue# | ||
---|---|---|---|---|---|
 | n | % | n | % |  |
Overall | 398 | Â | 372 | Â | Â |
Age* | Â | Â | Â | Â | Â |
≤ 40 | 79 | 19.8 | 69 | 18.6 | 0.08 |
41–45 | 106 | 26.6 | 98 | 26.4 |  |
46–50 | 144 | 36.2 | 113 | 30.4 |  |
51–55 | 69 | 17.3 | 91 | 24.5 |  |
Missing | 0 | - | 1 | - | Â |
Mean (SD) | 44.8 | (6.2) | 45.2 | (6.6) | 0.37 |
BMI | Â | Â | Â | Â | Â |
<18.5 | 7 | 2.2 | 4 | 1.1 | 0.05 |
18.5 – 25 | 178 | 55.1 | 166 | 46.0 |  |
25 – 30 | 81 | 25.1 | 116 | 32.1 |  |
> 30 | 57 | 17.6 | 75 | 20.8 | Â |
Missing | 75 | - | 11 | - | Â |
Mean (SD) | 25.7 | (5.4) | 26.3 | (5.5) | 0.14 |
Education | Â | Â | Â | Â | Â |
Up to high school | 122 | 35.4 | 101 | 27.2 | 0.06 |
Technical school | 27 | 7.8 | 34 | 9.2 | Â |
Some college/University | 196 | 56.8 | 236 | 63.4 | Â |
Missing | 53 | - | 1 | - | Â |
Smoking status | Â | Â | Â | Â | Â |
Ever smoked | 184 | 53.2 | 209 | 56.3 | 0.40 |
Never smoked | 162 | 46.8 | 162 | 43.7 | Â |
Missing | 52 | - | 1 | - | Â |
Family History | Â | Â | Â | Â | Â |
Yes‡ | 86 | 21.6 | 34 | 9.2 | <10-5 |
No | 312 | 78.4 | 337 | 90.8 | Â |
Missing | 0 | - | 1 | - | Â |
Menopausal status | Â | Â | Â | Â | Â |
Pre-menopausal | 296 | 84.0 | 261 | 82.1 | 0.42 |
Post-menopausal | 56 | 16.0 | 57 | 17.9 | Â |
Missing†| 46 | - | 54 | - |  |
Age at menarche | Â | Â | Â | Â | Â |
Age ≤ 12 | 154 | 45.2 | 177 | 48.1 | 0.43 |
Age > 12 | 187 | 54.8 | 191 | 51.9 | Â |
Missing | 57 | - | 4 | - | Â |
Age period stopped | Â | Â | Â | Â | Â |
Pre-menopausal | 296 | 84.6 | 261 | 82.1 | 0.68 |
Age ≤ 49 | 39 | 11.1 | 42 | 13.2 |  |
Age > 49 | 15 | 4.3 | 15 | 4.7 | Â |
Missing | 48 | - | 54 | - | Â |
Parity (# of live births) | Â | Â | Â | Â | Â |
Nulliparous | 68 | 19.6 | 63 | 17.0 | 0.85 |
1 child | 56 | 16.1 | 57 | 15.4 | Â |
2 children | 145 | 41.8 | 157 | 42.3 | Â |
≥ 3 children | 78 | 22.4 | 94 | 25.3 |  |
Missing | 51 | - | 1 | - | Â |
Age at 1 st live birth | Â | Â | Â | Â | Â |
Nulliparous | 68 | 19.7 | 63 | 17.0 | 0.63 |
≤ 24 years | 126 | 36.4 | 136 | 36.7 |  |
> 24 years | 152 | 43.9 | 172 | 46.4 | Â |
Missing | 52 | - | 1 | - | Â |