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Table 1 Patient demographics, tumor characteristics and surgical procedures

From: Outcomes of colorectal cancer surgery in the nonagenarians: 20-year result from a tertiary center

  n %
Sex
 Male 20 35.1
 Female 37 64.9
ASA
 2 24 42.1
 3 30 52.6
 4 3 5.3
ECOG
 2 21 36.8
 3 28 49.1
 4 8 14.0
Tumor location
 Colon 38 66.7
 Rectum 19 33.3
Stage^
 1 4 7.0
 2 23 40.4
 3 20 35.1
 4 6 10.5
 Unknown 4 7.0
Procedures
 Right / extended right hemicolectomy / transverse colectomy 25 43.9
 Hartmann’s procedure 9 15.8
 Left hemicolectomy / sigmoidectomy / anterior resections 8 14.0
 Low anterior resection 7 12.3
 Subtotal colectomy 3 5.3
 Diversion stoma 3 5.3
 Bypass 2 3.5
  1. ^According to the 8th American Joint Committee on Cancer (AJCC) staging classification