TABLE 1.
Sample demographics
| Age | |
| Mean ± SD | 63.59 ± 7.38 |
| Range (years) | 45.13–82.27 |
| Number of childbirths (live) | |
| Mean ± SD | 1.72 ± 1.16 |
| Range | 0–9 |
| N in each group: | |
| 0 = 4,297 | 1 = 2,459 | 2 = 8,770 | |
| 3 = 3,334 | 4 = 729 | 5 = 142 | |
| 6 = 43 | 7 = 7 | 8 = 5 | 9 = 1 | |
| Age at first birth (N = 15,446) | |
| Mean ± SD | 27.08 ± 5.01 |
| Range | 14–47 |
| Years since last birth (N = 13,023) | |
| Mean ± SD | 33.37 ± 9.32 |
| Range | 6.77–60.34 |
| Menopausal status (N = 19,781) | |
| Yes | 6,117 |
| No | 10,737 |
| Not sure, had hysterectomy | 1,912 |
| Not sure, other reason | 1,015 |
| Ethnic background | |
| % White | 97.06 |
| % Black | 0.69 |
| % Mixed | 0.54 |
| % Asian | 0.75 |
| % Chinese | 0.37 |
| % Other | 0.55 |
| % Do not know | 0.03 |
| Education | |
| % University/college degree | 44.71 |
| % A levels or equivalent | 14.09 |
| % O levels/GCSE or equivalent | 24.91 |
| % NVQ or equivalent | 3.17 |
| % Professional qualification | 5.65 |
| % None of the above | 5.91 |
| Assessment location (imaging) | |
| Newcastle | 5,139 |
| Cheadle | 11,906 |
| Reading | 2,742 |
Abbreviations: GCSE, General Certificate of Secondary Education; NVQ, National Vocational Qualification.