Table 4.
Positive predictive value of biopsy recommendation by imaging method/s
| Imaging method/s | Number of cancers | Number of biopsies | Percentage positive | 95% CI |
|---|---|---|---|---|
| All positive mammograms | 23 | 59 | 39.0% | 26.6 to 52.6% |
| All positive AWBU | 38 | 99 | 38.4% | 28.8 to 48.7% |
| AWBU positive, mammogram negative | 23 | 75 | 30.7% | 20.5 to 42.4% |
| Mammography and AWBU positive | 15 | 24 | 62.5% | 40.6 to 81.2% |
| AWBU negative, mammogram positive | 8 | 35 | 22.9% | 10.4 to 40.1% |
Abbreviations: AWBU, automated whole breast ultrasound; CI, confidence intervals