Research Article
A Simple Model to Assess the Probability of Invasion in Ductal Carcinoma In Situ of the Breast Diagnosed by Needle Biopsy
Table 5
Performance of the simplified model in the test population,
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| | | Number of patients with invasion detected in the resection specimen (%) | Number of patients with pure DCIS in the resection specimen (%) | Positive predictive value (95% CI) | Negative predictive value (95% CI) |
| | Low probability predicted (low-risk group), | 18 (16.8) | 89 (83.2) |
52.6% (42.6, 62.5) |
83.2% (76.1, 90.3) | | High probability predicted (high-risk group), | 51 (52.6) | 46 (47.4) |
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