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Table 1 Demographic data

From: Advantage of laparoscopy surgery for elderly colorectal cancer patients without compromising oncologic outcome

Characteristic Open (n = 662) Laparoscopy (n = 305) P
Age (y/o) 80.4 ± 4.2 80.4 ± 4.6 0.878
Sex (male) 369 (55.7) 166 (54.4) 0.703
Body mass index (kg/m2)    0.014
 Underweight (< 18.5) 54 (8.3) 16 (5.2)  
 Healthy (18.5–25) 406 (62.1) 170 (55.7)  
 Overweight (25–30) 168 (25.7) 98 (32.1)  
 Obese (> 30) 26 (4.0) 21 (6.9)  
Hypertension 384 (58.0) 205 (67.2) 0.006
Cardiac disease 113 (17.1) 60 (19.7) 0.326
Cerebral vascular disease 53 (8.0) 20 (6.6) 0.428
Asthma 34 (5.1) 14 (4.6) 0.717
Diabetes mellitus 171 (25.8) 74 (24.3) 0.602
Cirrhosis 11 (1.7) 6 (2.0) 0.737
TNM stage    0.003
 0 8 (1.2) 8 (2.6)  
 1 83 (12.5) 62 (20.3)  
 2 294 (44.4) 129 (42.3)  
 3 277 (41.8) 106 (34.8)  
CEA > 5 (ng/ml) 238 (36.0) 75 (24.6)  < 0.001
Hb < 10 (g/dL) 176 (26.6) 76 (24.9) 0.583
Albumin < 3.5 (g/dL) 155 (23.4) 45 (14.8) 0.002
AST > 34 (U/L) 50 (7.6) 26 (8.5) 0.602
Total bilirubin > 1.3 (mg/dL) 16 (2.4) 7 (2.3) 0.908
Cr > 1.27 (mg/dL) 141 (21.3) 79 (25.9) 0.113
  1. Data are presented as n (%) unless otherwise indicated. CEA carcinoembryonic antigen, Hb hemoglobin, AST aspartate transaminase, Cr creatinine