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Table 6 Multivariate Cox proportional hazard regression of survival for the patients from the USA1 cohort

From: Expression profiling of ion channel genes predicts clinical outcome in breast cancer

Covariate Hazard ratio 95% Confidence interval P-value
IC30 + vs. - 2.21 (1.32, 3.70) 0.002
Age (per year) 1.00 (0.98, 1.02) 0.940
Lymph node + vs. - 2.07 (1.35, 3.16) < 0.001
Tumor size ≥ T3 vs. < T3 1.73 (1.16, 2.57) 0.007
Grade 3 vs. 1,2 0.67 (0.41, 1.11) 0.119
ER + vs. - 0.58 (0.33, 1.01) 0.055
PR + vs. - 0.76 (0.45, 1.31) 0.330