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Table 3 Correlation analysis for PDX formation of HNSCC cases between biopsies and surgical specimen

From: Establishment and characterization of patient-derived head and neck cancer models from surgical specimens and endoscopic biopsies

Spearman correlation p Value Correlation coefficienta
Sample type 0.912 0.016
Sample size 0.300 -0.154
Age 0.887 0.021
Ischemia time 0.808 0.036
Ki-67 index 0.770 -0.043
  1. a1 = perfect positive correlation; -1 = perfect negative correlation; 0 = no correlation