Table 1

Baseline demographic and clinical characteristics of the study population

Chronic liver diseases
Total sample n=7463No n=5908Yes n=1555P values
Types of chronic liver disease
 None5908 (79.16)5908 (100.00)0 (0.00)
 Chronic hepatitis B65 (0.87)0 (0.00)65 (4.18)
 Chronic hepatitis C564 (7.56)0 (0.00)564 (36.27)
 Non-alcoholic fatty liver disease441 (5.91)0 (0.00)441 (28.36)
 Other types485 (6.50)0 (0.00)485 (31.19)
Postoperative complications0.228
 No5830 (78.12)4633 (78.42)1197 (76.98)
 Yes1633 (21.88)1275 (21.58)358 (23.02)
  Postoperative infection360 (22.05)276 (21.65)84 (23.46)
  Postoperative shock23 (1.41)15 (1.18)8 (2.23)
  Postoperative bleeding149 (9.12)104 (8.16)45 (12.57)
  Disruption of wound73 (4.47)55 (4.31)18 (5.03)
  Non-healing surgical wound4 (0.24)4 (0.31)0 (0.00)
  Nervous system complications17 (1.04)16 (1.25)1 (0.28)
  Cardiac arrest/heart failure125 (7.65)102 (8.00)23 (6.42)
  Phlebitis/thrombophlebitis5 (0.31)3 (0.24)2 (0.56)
  Respiratory complications141 (8.63)121 (9.49)20 (5.59)
  Digestive system complications675 (41.33)529 (41.49)146 (40.78)
  Urinary complications60 (3.67)49 (3.84)11 (3.07)
  Unspecified complications1 (0.06)1 (0.08)0 (0.00)
In-hospital mortality<0.001
 No7301 (97.83)5806 (98.28)1495 (96.14)
 Yes162 (2.17)102 (1.73)60 (3.86)
Age0.984
 Mean±SD62.53± 12.1762.53± 12.1662.52± 12.17
Gender0.708
 Male4283 (57.39)3384 (57.28)899 (57.81)
 Female3180 (42.61)2524 (42.72)656 (42.19)
Race<0.001
 White4536 (60.78)3570 (60.43)966 (62.12)
 Black810 (10.85)614 (10.39)196 (12.60)
 Hispanic359 (4.81)266 (4.50)93 (5.98)
 Asian or Pacific Islander154 (2.06)108 (1.83)46 (2.96)
 Native American24 (0.32)19 (0.32)5 (0.32)
 Other/Missing1580 (21.17)1331 (22.53)249 (16.01)
Median household income<0.001
 Quartile 11993 (26.71)1564 (26.47)429 (27.59)
 Quartile 21902 (25.49)1489 (25.20)413 (26.56)
 Quartile 31757 (23.54)1386 (23.46)371 (23.86)
 Quartile 41646 (22.06)1354 (22.92)292 (18.78)
 Others165 (2.21)115 (1.95)50 (3.22)
Location of hospital<0.001
 Rural984 (13.19)833 (14.10)151 (9.71)
 Urban non-teaching2711 (36.33)2152 (36.43)559 (35.95)
 Urban teaching3731 (49.99)2894 (48.98)837 (53.83)
 Others37 (0.50)29 (0.49)8 (0.51)
Types of admission0.006
 Non-elective2323 (31.13)1789 (30.28)534 (34.34)
 Elective5122 (68.63)4103 (69.45)1019 (65.53)
 Others18 (0.24)16 (0.27)2 (0.13)
Severity of CRC0.987
 None4889 (65.51)3868 (65.47)1021 (65.66)
 Lymph node metastasis1823 (24.43)1444 (24.44)379 (24.37)
 Distant metastasis751 (10.06)596 (10.09)155 (9.97)
Length of hospital stay (days)<0.001
 Mean± SD8.96±7.248.61± 6.4910.26±9.46
Hyperlipidaemia<0.001
 No5624 (75.36)4382 (74.17)1242 (79.87)
 Yes1839 (24.64)1526 (25.83)313 (20.13)
Obesity0.827
 No6556 (87.85)5187 (87.80)1369 (88.04)
 Yes907 (12.15)721 (12.20)186 (11.96)
  • CRC, colorectal cancer.