Characteristics of Survey Responders (n = 209)
| Characteristic | Value |
|---|---|
| Age | |
| Mean ± SD (y) | 60.1 ± 10.5 |
| Median (y) | 61.1 (range, 40–81) |
| Category (n) | |
| 40–49 y | 44 (21%) |
| 50–59 y | 54 (26%) |
| 60–69 y | 69 (33%) |
| ≥70 y | 42 (20%) |
| Race (n); n = 207 | |
| White | 197 (95%) |
| Black or African American | 2 (1%) |
| Asian | 8 (4%) |
| American Indian/Alaskan Native | 0 |
| Native Hawaiian/Pacific Islander | 0 |
| Ethnicity (n); n = 206 | |
| Hispanic or Latino | 5 (2%) |
| Not Hispanic or Latino | 201 (98%) |
| BMI category (n); n = 198 | |
| <18.5 kg/m2 | 5 (3%) |
| 18.5 to <25 kg/m2 | 99 (50%) |
| 25 to <30 kg/m2 (overweight) | 62 (31%) |
| ≥30 kg/m2 (obese) | 32 (16%) |
| Menopausal status | |
| Premenopausal | 54 (26%) |
| Postmenopausal | 143 (68%) |
| Unknown | 12 (6%) |
| Personal history of breast cancer (n) | 46 (22%) |
| MBI history* (n) | |
| First-time MBI | 76 (36%) |
| At least 1 prior MBI | 133 (64%) |
| MBI indication | |
| Screening | 202 (97%) |
| Diagnostic | 7 (3%) |
| Breast Imaging Reporting and Data System breast density (n); n = 208 | |
| A: Almost entirely fat | 1 (<1%) |
| B: Scattered fibroglandular densities | 12 (6%) |
| C: Heterogeneously dense | 156 (75%) |
| D: Extremely dense | 39 (19%) |
| MBI compressed thickness on craniocaudal view; n = 208† | |
| Mean ± SD (cm) | 5.9 ± 1.5 |
| Median (cm) | 6.1 (range, 1.3–9.3) |
| Category (n) | |
| <4 cm | 19 (9%) |
| 4–8 cm | 176 (85%) |
| >8 cm | 13 (6%) |
| Mammography compressed thickness on craniocaudal view (cm); n = 204† | |
| Mean | 5.4 ± 1.4 |
| Median | 5.4 (range, 1.6–9.1) |
↵* History of prior MBI was obtained from survey question 1 for 208 responders and verified via medical record review for 1 responder with missing response to survey question 1.
↵† Reported for all available data. Among 203 patients with compressed thickness available for both MBI and mammography, mean thickness was 5.9 cm (SD, 1.5) for MBI and 5.3 cm (SD, 1.4) for mammography.