Prospective Study
Copyright ©The Author(s) 2019.
World J Gastrointest Surg. May 27, 2019; 11(5): 261-270
Published online May 27, 2019. doi: 10.4240/wjgs.v11.i5.261
Table 1 Patients’ demographics, pre- and peri-operative patient characterization n (%)
VariablesCC n = 2515CD n = 375P value
Age (yr)171 (15)37 (23)< 0.01
Haemoglobin (g/dL)111.9 (3)12.8 (2)< 0.01
Gender Male Female1310 (52.1) 1205 (48.9)161 (42.9) 214 (57.1)0.01
History of diabetes463 (18.4)7 (1.9)< 0.01
History of IHD548 (21.8)10 (2.7)< 0.01
BMI ≤ 18.5 18.6-25 25.1-30 > 30 Missing57 (2.5) 926 (39.9) 867 (37.4) 468 (20.2) 197 (7.8)43 (12.4) 209 (60.4) 72 (20.8) 22 (6.4) 29 (7.7)< 0.01
ASA grade I II III IV V250 (9.9) 1261 (50.1) 903 (35.9) 98 (3.9) 3 (0.01)88 (23.5) 239 (63.7) 45 (12.0) 3 (0.8) 0 (0)< 0.01
Abnormal s. creatinine294 (11.6)13 (3.5)< 0.01
Smoking status Non-smoker Current smoker Ex-smoker Missing1587 (63.1) 268 (10.7) 486 (19.3) 174 (6.9)219 (58.4.1) 81 (23.1) 52 (14.8) 23 (6.1)< 0.01
Previous surgery in the area607 (24.1)122 (32.5)< 0.01
Urgency of surgery Elective/expedited Emergency2216 (88.1) 299 (11.9)321 (85.6) 54 (14.4)0.130
Surgeon in charge Colorectal surgeon General surgeon1798 (71.5) 717 (28.5)313 (83.5) 62 (16.5)< 0.01
Operative approach Laparoscopy Converted to open Open1221 (48.5) 219 (8.7) 1075 (42.7)177 (47.2) 42 (11.2) 156 (41.6)0.317
Type of resection Ileocecal resection Right hemicolectomy125 (5.0) 2390 (95.0)266 (70.9) 109 (29.1)< 0.01
De-functioning stoma78 (3.1)46 (12.3)< 0.01
Skin closure technique Suture closure Stapled Others842 (33.5) 1450 (57.7) 223 (8.9)196 (52.2) 145 (38.7) 34 (9.1)< 0.01
Unplanned Intra-operative events2230 (9.15)56 (14.9)< 0.01
Duration of operation (minutes)1130 (65)128 (59)0.831
Table 2 Risk factors of post-operative complications in multivariate analyses
VariableUnitsOR95%CIP value
IndicationCC vs CD0.800.54-1.170.25
GenderMale vs female1.531.28-1.83< 0.01a
AgeYears1.011.01-1.02< 0.01a
BMI≤ 18.5 vs 18.6-251.370.87-2.170.18
25.1-30 vs 18.6-25 > 30 vs 18.6-250.88 1.110.72-1.07 0.87-1.420.21 0.39
ASA gradeIV-V vs I-III1.631.04-2.560.03
IHDIHD vs no IHD1.170.94-1.460.16
DiabetesHistory of diabetes vs no history of diabetes1.050.84-1.320.66
SmokingEx-smoker vs never smoker1.27[1.02-1.580.04a
Current smoker vs never smoker1.311.01-1.700.04a
Haemoglobin0.990.95-1.030.62
Operating surgeonGeneral surgeon vs colorectal surgeon1.110.91-1.340.31
UrgencyEmergency vs eLective/expedited1.551.18-2.05< 0.01a
De-functioning/primary stomaDe-functioning stoma vs no de-functioning stoma1.130.52-2.450.77
Duration of operation≥ 120 min vs < 120 min1.341.13-1.59< 0.01a
Operative approachConverted vs laparoscopy0.970.72-1.320.85
Open vs laparoscopy1.521.24-1.85< 0.01a
Unplanned intraoperative adverse eventsAny UIAES vs no UIAEs1.541.21-1.95< 0.01a
CRP1.011.00-1.01< 0.01a
Previous surgeryAny previous surgery vs no previous surgery1.261.04-1.520.02a
Resection typeRight hemicolectomy vs ileocecal resection0.860.63-1.190.37
Skin closureStapled vs suture1.441.19-1.75< 0.01a
Table 3 Risk factors affecting the post-operative length of stay at hospital in multivariate analyses
VariableUnitsEstimates95%CIP value
IndicationCC vs CD0.870.79; 0.95< 0.01a
Gendermale vs female1.061.01; 1.100.01a
Age1.011.00; 1.01< 0.01a
BMI≤18.5 vs 18.6-251.231.10; 1.38< 0.01a
25.1-30 vs 18.6-25 >30 vs 18.6-250.98 1.040.92; 1.04 0.96; 1.120.54 0.35
ASA gradeIV-V vs I-III1.040.94; 1.160.45
IHDIHD vs no IHD1.071.01; 1.130.01a
DiabetesHistory of diabetes vs no history of diabetes1.020.96; 1.080.50
SmokingEx-smoker vs never smoker0.980.92; 1.040.43
Current smoker vs never smoker1.050.98; 1.110.15
Haemoglobin0.990.98; 1.000.06
Operating surgeonGeneral surgeon vs colorectal surgeon1.101.05; 1.15< 0.01a
UrgencyEmergency vs elective/expedited1.060.99; 1.140.08
De-functioning/primary stomaDe-functioning stoma vs no de-functioning stoma1.461.21; 1.77< 0.01a
Duration of operation≥ 120 vs < 1201.081.04; 1.13< 0.01a
Operative approachConverted vs laparoscopy1.101.02; 1.180.01a
Open vs laparoscopy1.351.29; 1.42< 0.01a
Unplanned intraoperative adverse eventsAny UIAES vs no UIAEs1.081.02; 1.150.01a
CRP1.001.00; 1.00< 0.01a
Previous surgeryAny previous surgery vs no previous surgery1.030.98; 1.080.23
Resection typeRight hemicolectomy vs ileocecal resection1.030.96; 1.110.42
Skin closureStapled vs suture1.061.01; 1.110.02a