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Table 7 Multivariate analysis of relapse-free survival

From: Relationship between intratumoral expression of genes coding for xenobiotic-metabolizing enzymes and benefit from adjuvant tamoxifen in estrogen receptor alpha-positive postmenopausal breast carcinoma

  Relapse-free survival
Variable Regression coefficient RR (95% CI) P a
NAT1 status -0.84   0.0013
   Normal expression   1  
   Moderate overexpression   0.43 (0.26–0.72)  
   Strong overexpression   0.19 (0.07–0.52)  
Lymph node status +0.77   0.016
   0   1  
   1–3   2.17 (1.15–4.09)  
   > 3   4.72 (1.33–16.7)  
  1. CI, confidence interval; RR, relative risk. a P value, Cox's proportional hazards regression model.