Table 2.
Independent Predictors of Downstream Diagnostic Breast Imaging Tests Following 5750 Screening Mammograms in Advanced Colorectal or Lung Cancer Patients*
| Diagnostic mammography OR (95% CI) |
Breast ultrasound OR (95% CI) |
|
|---|---|---|
| Cancer type | ||
| Colorectal vs. lung | 1.2 (1–1.4) (p = 0.09) |
1 (0.7–1.3) (p = 0.89) |
| Age, years (reference: >80) | ||
| 65–69 | 1.1 (0.8–1.5) (p = 0.71) |
0.9 (0.6–1.3) (p = 0.55) |
| 70–74 | 1.1 (0.8–1.5) (p = 0.40) |
1 (0.7–1.5) (p = 0.95) |
| 75–79 | 0.9 (0.6–1.2) (p = 0.45) |
0.7 (0.5–1.2) (p = 0.20) |
| Marital status (reference: not married) | ||
| Married | 1 (0.8–1.2) (p = 0.87) |
1 (0.8–1.3) (p = 0.88) |
| Race (reference: African American) | ||
| White |
1.6 (1.1–2.3)
( p = 0.02) |
1.3 (0.8–2.1) (p = 0.22) |
| Other | 1.2 (0.7–2.2) (p = 0.53) |
0.9 (0.4–1.9) (p = 0.74) |
| Poverty index (reference: 20–100%) | ||
| 0 – <5% | 1.3 (0.9–1.8) (p = 0.12) |
1.8 (1.2–2.7)
( p = 0.008) |
| 5 – <10% | 0.9 (0.7–1.3) (p = 0.65) |
1.4 (0.9–2.1) (p = 0.14) |
| 10 – <20% | 1.1 (0.8–1.6) (p = 0.34) |
1.5 (1–2.3) (p = 0.06) |
| SEER Registry (reference: Northeast) | ||
| Midwest |
0.7 (0.5–0.9)
( p = 0.008) |
0.9 (0.6–1.3) (p = 0.48) |
| Southeast | 0.8 (0.6–1) (p = 0.08) |
1.2 (0.9–1.7) (p = 0.28) |
| West |
0.6 (0.5–0.9)
( p = 0.004) |
1.1 (0.7–1.6) (p = 0.36) |
*Sample size for breast MRI was too small for evaluation. Analyses were performed at the level of screening event
Boldface indicates statistical significance (p <0.05)