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Table 3 Correlation between early tumor shrinkage 6 weeks after treatment and overall response

From: Tumour shrinkage at 6 weeks predicts favorable clinical outcomes in a phase III study of gemcitabine and oxaliplatin with or without erlotinib for advanced biliary tract cancer

   Overall response Sum
   Response Non-response
Early tumor shrinkage Yes 17 6 23
  No 13 67 80
Sum 30 73 103
  1. (Correlation coefficient: 0.529, p < 0.001)