Table 1.
Means (SD's) of breast composition measures using the Volpara volumetric breast density measurement (Volpara Health Technologies Ltd), by age and diagnostic group, in 6944 assessment cases, including 1149 cancers in the UK Breast Screening Programme.
| Age (years) | Breast composition measure | Mean (SD) for population |
|||
|---|---|---|---|---|---|
| Cancers | Assessment non-cancers |
Family history non-cancers |
All non-cancers |
||
| <50 | Breast volume (cm3) | 1063 (663) | 1027 (673) | 1041 (668) | 1037 (669) |
| Dense volume (cm3) | 111 (53) | 101 (67) | 101 (61) | 101 (63) | |
| % Density | 13 (7) | 12 (6) | 12 (7) | 12 (7) | |
| No. of subjects | 29 | 313 | 942 | 1255 | |
| 50–59 | Breast volume (cm3) | 1153 (670) | 1034 (614) | 983 (597) | 1033 (613) |
| Dense volume (cm3) | 94 (54) | 84 (50) | 84 (51) | 84 (50) | |
| % Density | 10 (6) | 9 (5) | 10 (5) | 10 (5) | |
| No. of subjects | 460 | 3092 | 43 | 3135 | |
| ≥60 | Breast volume (cm3) | 1092 (562) | 1010 (557) | 582 (75) | 1009 (556) |
| Dense volume (cm3) | 77 (44) | 73 (43) | 53 (20) | 73 (43) | |
| % Density | 8 (4) | 8 (4) | 9 (2) | 8 (4) | |
| No. of subjects | 660 | 1402 | 3 | 1405 | |