Table 5.
Comparison of those who did and did not give sufficient information and/or permission for follow up
| Sufficient information and/or permission for follow-up | ||
| Characteristic | Yes (n = 113 104) | No (n = 8025) |
| Average age (years) | 56.1 | 56.2 |
| Average age at leaving school (years) | 15 | 15 |
| Average height (m) | 1.62 | 1.62 |
| Average weight (kg) | 68.5 | 67.5 |
| Current smoker (%) | 18 | 18 |
| Drink alcohol (%) | 78 | 72 |
| Exercise at least once a week (%) | 43 | 42 |
| Parous (%) | 89 | 84 |
| Average number of children | 2.4 | 2.4 |
| Average age at first birth (years) | 24.0 | 24.3 |
| Previous breast cancer screen (%) | 79 | 76 |
| Previous diagnosis of breast cancer (%) | 1.4 | 0.9 |
| Mother or sister with a history of breast | 9 | 8 |
| cancer (%) | ||
| Previous use of oral contraceptives (%) | 54 | 45 |
| Current use of HRT (%) | 33 | 25 |
| Past use of HRT (%) | 15 | 14 |
HRT, hormone replacement therapy.