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Table 2 Basic description of the whole sample at baseline

From: Colorectal cancer health services research study protocol: the CCR-CARESS observational prospective cohort project

  N (%) Main cancer location
   Rectal Colon
Total 2749 770 (28.01) 1979 (71.99)
Gender (Men) 1749 (63.62) 522 (67.79) 1227 (62.00)
Agea 68.50 (10.97) 67.14 (11.26) 69.02 (10.81)
Charlson Comorbidity indexa 2.88 (1.29) 2.83 (1.22) 2.90 (1.32)
ASA index    
 I,II 1548 (57.92) 450 (59.92) 1098 (57.13)
 III 1020 (38.16) 277 (36.88) 743 (38.66)
 IV 105 (3.93) 24 (3.20) 81 (4.21)
Surgical approach (main)    
 Open surgery 1139 (41.89) 307 (40.55) 832 (42.41)
 Laparoscopy 1580 (58.11) 450 (59.45) 1130 (57.59)
Laterality of the tumor (Right –transverse side) 834 (42.14) NA 834 (42.14)
pTNM    
 0, I, II 1581 (57.85) 485 (63.32) 1096 (55.72)
 III 892 (32.64) 221 (28.85) 671 (34.11)
 IV 260 (9.51) 60 (7.83) 200 (10.17)
  1. Laterality of the tumor: Right-transverse side (appendix, cecum, ascending colon, right hepatic flexure and transverse) versus left side (left splenic flexure, descending colon, and sigmoid colon)
  2. ASA, American Society of Anesthesiologists
  3. pTNM pathological tumor-node-metastasis staging
  4. aMeans and, in brackets, standard deviation