Research Article
A Simple Model to Assess the Probability of Invasion in Ductal Carcinoma In Situ of the Breast Diagnosed by Needle Biopsy
Table 7
Performance of the simplified model in the validation 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), | 3 (7.1) | 39 (92.9) |
48.3% (30.1, 66.5) |
92.9% (85.1, 100.0) | | High probability predicted (high-risk group), | 14 (48.3) | 15 (51.7) |
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