Table 1.
Associations between breast cancer and birthweight
| Reference | Number of cases | Direction of trend and menopausal status |
|---|---|---|
| 28 * | 153 | None; pre-menopausal |
| 29 | 458 | Positive; pre-menopausal & postmenopausal |
| 30 | 582 | Positive; pre-menopausal & postmenopausal |
| 31 | 746 and 401 | Positive, pre-menopausal; none, postmenopausal |
| 32 | 1068 | None; pre-menopausal & postmenopausal |
| 33 * | 57 | None, menopausal status not disclosed |
| 34 * | 484 | Positive; pre-menopausal |
| 35 | 37 | Positive; pre-menopausal & postmenopausal |
| 36 | 90 | Positive; pre-menopausal & postmenopausal |
| 37 | 62 | None; pre-menopausal & postmenopausal |
| 38 | 177 | None; postmenopausal |
| 39 | 288 | None; pre-menopausal |
| 40 * | 1716 | Positive; postmenopausal |
| 41 | 373 | Positive; pre-menopausal & postmenopausal |
| 42 * | 2334 | Positive; pre-menopausal & postmenopausal |
| 43 | 359 | Positive; pre-menopausal & postmenopausal |
| 44 | 127 | Positive; pre-menopausal & postmenopausal |
| 45 | 881 | Positive; pre-menopausal |
| 46 | 59 | Positive; pre-menopausal & postmenopausal |
| 47 | 2074 | Positive; menopausal status not disclosed |
| 48 | 196 | None; pre-menopausal & postmenopausal |
| 49 | 89 | Positive; postmenopausal |
| 50 | 367 | Positive pre-menopausal, none postmenopausal |
| 51 | 312 | Positive; pre-menopausal & postmenopausal |
| 52 | 828 and 2312 | Positive pre-menopausal, none postmenopausal |
*
Studies in which high birth weight was defined as ≥ 4500g.