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Multivariable analysis.
| Variable | BRCA1 (%) | Not BRCA1 (%) | Odds Ratio | p-value |
|---|---|---|---|---|
| Median Age at Diagnosis (IQR) | 34.5 (32–42) | 45 (39.5–52) | OR 0.89 (0.81–0.95) | 0.0005 |
| Triple-Negative Subtype | 11/14 (79) | 75/356 (21) | OR 17.20 (3.74–114.72) | <0.0001 |
| Median Number of Breast Cancer Cases in the Family up to Third Degree, excluding proband (IQR) | 2.5 (1–3) | 1 (0–2) | OR 2.46 (1.57–4.03) | 0.0001 |
IQR, interquartile range; OR, Odds Ratio.
