Table 1.
Baseline characteristics by race/ethnicity of women undergoing screening mammography and enrolled in the Know Your Risk: Assessment at Screening (KYRAS) study (N=2019) at Columbia University Medical Center, New York, NY (November 2014–October 2015)
| Variable, N=2019 (%) | Hispanic N=1542 (76.4%) |
Non-Hispanic White N=204 (10.1%) |
Non-Hispanic Black N=194 (9.6%) |
Other N=79 (3.9%) |
p-value |
|---|---|---|---|---|---|
| Age (years) | <0.0001 | ||||
| <50 | 313 (20.3) | 60 (29.4) | 53 (27.3) | 34 (43.0) | |
| 50+ | 1229 (79.7) | 144 (70.6) | 141 (72.7) | 45 (57.0) | |
| Education | <0.0001 | ||||
| High school diploma or less | 1114 (72.2) | 23 (11.3) | 67 (34.6) | 25 (31.7) | |
| Some college | 207 (13.4) | 17 (8.3) | 54 (27.8) | 16 (20.3) | |
| College diploma | 162 (10.5) | 59 (28.9) | 48 (24.7) | 16 (20.3) | |
| Graduate/professional degree | 59 (3.8) | 105 (51.5) | 25 (12.9) | 22 (27.7) | |
| Body mass index (BMI, kg/m2) | <0.0001 | ||||
| Underweight (<18.5) | 17 (1.1) | 8 (3.9) | 2 (1.0) | 4 (5.1) | |
| Normal weight (18.5–24.9) | 399 (25.9) | 87 (42.7) | 38 (19.6) | 38 (48.1) | |
| Overweight (25–29.9) | 595 (38.6) | 56 (27.4) | 59 (30.4) | 14 (17.7) | |
| Obese (30+) | 531 (34.4) | 53 (26.0) | 95 (49.0) | 23 (29.1) | |
| Breast density* | 0.0004 | ||||
| Low breast density | 1109 (71.9) | 125 (61.3) | 132 (68.0) | 44 (55.7) | |
| High breast density | 433 (28.1) | 79 (38.7) | 62 (32.0) | 35 (44.3) | |
| Frequency of screening mammography** | <0.0001 | ||||
| Annually | 1109 (71.9) | 124 (60.8) | 125 (84.4) | 41 (51.9) | |
| Biennially | 247 (16.0) | 38 (18.6) | 35 (18.0) | 15 (19.0) | |
| Every 3+ years | 138 (9.0) | 26 (12.8) | 27 (13.9) | 15 (19.0) | |
| First mammogram | 48 (3.1) | 16 (7.8) | 7 (3.6) | 8 (10.1) | |
| High-risk for breast cancer | |||||
| 5-year Gail risk score ≥1.67% | 168 (10.9) | 125 (61.3) | 48 (24.7) | 17 (21.5) | <0.0001 |
| Eligible for BRCA genetic testing | 164 (10.6) | 44 (21.6) | 18 (9.3) | 11 (13.9) | 0.0003 |
Breast density was dichotomized as low [almost entirely fatty (<25% density) or scattered areas of fibroglandular density (25–50%)] or high [heterogeneously dense (51–75%) or “extremely dense” (>75%)]
Yearly screening frequency was determined as a median of 9 to 18 months between screening mammograms. Biennial screening frequency was determined as a median of >18 to 30 months between screening mammograms. Every 3+ years was determined as greater than a median of 30 months between screening mammograms