Characteristic | Breast cancer cases (n = 62) | Controls (n = 179) | p value |
---|---|---|---|
Age at MBI,ayears | 60.3 ± 10.6 (38–86) | 60.2 ± 10.6 (38–88) | 0.88 |
Menopausal status | N/Ab | ||
Premenopausal | 13 (21) | 38 (21) | |
Postmenopausal | 49 (79) | 141 (79) | |
BMIa | 27.7 ± 6.4 (18.8–55.5) | 26.2 ± 4.6 (18.6–44.3) | 0.08 |
Postmenopausal systemic HRTc | 0.57 | ||
Current use at MBI | 13 (27) | 44 (31) | |
No current use at MBI | 36 (73) | 97 (69) | |
BI-RADS density | 0.77 | ||
Almost entirely fat | 1 (2) | 3 (2) | |
Scattered fibroglandular densities | 10 (16) | 34 (19) | |
Heterogeneously dense | 44 (71) | 114 (64) | |
Extremely dense | 7 (11) | 26 (15) | |
Unknown | 0 | 2 (1) | |
Percentage densitya | 24.8 ± 8.3 (3.5–48.0) | 24.6 ± 10.2 (1.8–53.8) | 0.92 |
MBI protocol | 0.88 | ||
740 MBq Tc-99m sestamibi | 36 (58) | 102 (57) | |
240–300 MBq of Tc-99m sestamibi | 26 (42) | 77 (43) | |
Tumor invasiveness | |||
Invasive | 45 (73) | NA | |
DCIS | 17 (27) | NA | |
Gail model 5-year riska | 2.7 ± 1.5 (0.6–7.2) | 2.4 ± 1.5 (0.5–9.5) | 0.23 |
BCSC model 5-year riska | 2.6 ± 1.2 (0.7–5.4) | 2.3 ± 1.5 (0.4–13.2) | 0.29 |
Family history of breast cancer | 0.45 | ||
One or more first-degree relatives | 33 (53) | 86 (48) | |
No first-degree relatives | 29 (47) | 93 (52) | |
Personal history of biopsy showing atypia or LCIS | 0.07 | ||
Yes | 6 (10) | 6 (3) | |
No | 56 (90) | 173 (97) |