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Table 1 Demographic data and BMI in the patients with colonic and rectal tumours

From: Preoperative endoscopic tattooing to mark the tumour site does not improve lymph node retrieval in colorectal cancer: a retrospective cohort study

  Tattooed group N = 107 Control group N = 143 P
Age (years) 71.3 (62.4-78.0) 73.3 (65.9-80.0) 0.14
Colonic cancer 71.1 (62.1-77.7) 74.3 (67.2-80.5) 0.05
Rectal cancer 74.5 (65.9-79.9) 72.4 (63.6-79.2) 0.50
Gender    
(Male/Female) 50 (47%)/57 (53%) 82 (57%)/61 (43%) 0.09
Colonic cancer 45 (46%)/52 (54%) 52 (54%)/44 (46%) 0.20
Rectal cancer 5 (50%)/5 (50%) 30 (64%)/17 (36%) 0.40
BMI a 26.0 ± 3.5 24.7 ± 4.0 0.08
Colonic cancer 25.8 ± 3.5 24.7 ± 3.9 0.20
Rectal cancer 28.5 ± 2.6 24.6 ± 4.1 0.08
  1. aThe BMI was available only for the 97 patients who were operated on in the year 2011, 46 (4 with rectal cancer) in the tattooed group and 51 (20 with rectal cancer) in the control group.