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Table 3 Comparison for number of CTCs before and after surgery in the endoscopic and the open group

From: Less micrometastatic risk related to circulating tumor cells after endoscopic breast cancer surgery compared to open surgery

Study periodEndoscopic group (n = 53)Open group (n = 57)P value a
Before surgery0.27(0.004–0.93)0.21(0.0001–0.75)0.361
After surgery0.36(0.002–1.10)0.43(0.02–1.43)0.515
P value b0.7170.122 
  1. The number of CTCs was represented as “median (25th and 75th percentiles)”
  2. aComparison between endoscopic group and open group by Mann-Whitney test
  3. bComparison between preoperation and postoperation period by Wilcoxon signed rank test