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Table 5 Multivariate analysis for predictors of recurrence based on the Cox proportional hazards regression model after exclusion of patients >50 years old.

From: Young age: an independent risk factor for disease-free survival in women with operable breast cancer

Variables HR 95% Confidence interval p
Age <35 years 1.8 1.17–2.81 0.008
Tumor size ≥ 2 cm 1.7 1.06–2.84 0.028
Lymph node-positive 4.2 2.64–6.82 <0.001
Nuclear grade 3 1.0 0.60–1.91 0.810
Histological grade 3 1.0 0.58–1.89 0.883
ER 1.1 0.71–1.78 0.625
PR 2.0 1.27–3.37 0.004
c-erbB2 1.4 0.97–2.21 0.069