Case Control Study
Copyright ©The Author(s) 2019.
World J Gastrointest Surg. Feb 27, 2019; 11(2): 93-100
Published online Feb 27, 2019. doi: 10.4240/wjgs.v11.i2.93
Table 1 Comparison of demographic and clinical data between the study and the control group
RIGL, n = 52SLR, n = 127P value
Age68.2 ± 9.668 ± 13.70.93
Gender (male)50 (n = 26)48.8 (n = 62)0.89
Risk factors
Smoking48.7 (n = 19)35.8 (n = 44)0.15
Diabetes32.6 (n = 17)39.4 (n = 50)0.4
Chronic pancreatitis9.6 (n = 5)9.5 (n = 12)0.3
Alcohol abuse8.8 (n = 3)5.8 (n = 7)0.5
Clinical presentation
Weight loss40.4 (n = 21)55.6 (n = 70)0.06
Abdominal pain61.5 (n = 32)66.7 (n = 84)0.51
Nausea23.1 (n = 12)23 (n = 29)0.99
Emesis15.4 (n = 8)13.5 (n = 17)0.74
Jaundice42.3 (n = 22)51.6 (n = 65)0.26
Table 2 Rate and type of complications within the study and the control group
RIGL, n = 52SLR, n = 127P value
Overall complications36.5 (n = 19)41.7 (n = 53)0.52
Superficial SSI23.1 (n = 12)21.3 (n = 27)0.8
Deep SSI3.2 (n = 4)1.9 (n = 1)0.65
Abscess15.4 (n = 8)11 (n = 14)0.42
POPF28.9 (n = 15)29.1 (n = 37)0.96
Intestinal leak3.9 (n = 2)0 (n = 0)0.03
Bile leak17.3 (n = 9)20.5 (n = 26)0.62
Phlebitis5.8 (n = 3)17.3 (n = 22)0.04
Pneumonia7.7 (n = 4)17.3 (n = 22)0.09
Pulmonary embolism0 (n = 0)1.6 (n = 2)0.53
DVT0 (n = 0)0.8 (n = 1)0.52
PVT5.8 (n = 3)3.2 (n = 4)0.41
CV9.6 (n = 5)12.6 (n = 16)0.57
UTI7.7 (n = 4)15 (n = 19)0.18
Delayed gastric emptying15.4 (n = 8)59.1 (n = 75)< 0.001
Grade A13.5 (n = 7)44.9 (n = 57)< 0.001
Grade B1.9 (n = 1)11.8 (n = 15)< 0.001
Grade C02.4 (n = 3)NR
Postoperative Mortality3.9 (n = 2)5.5 (n = 7)0.64
Table 3 The study group showed better outcome in terms of all variable related to delayed gastric emptying
RIGL, n = 52SLR, n = 127P value
Day of NG tube extraction (d) (median)3 (3-4)5 (4-6)< 0.001
Length of hospital stay (d) (median)10 (8-14)12 (10-18)0.005
Emesis After feeding tube extraction0 (n = 0)19.7 (n = 25)< 0.001
Need for returning of NG tube1.9 (n = 1)24.4 (n = 31)< 0.001
Day of return to normal diet (d) (median)8 (6-9)9 (8-15)< 0.001
Table 4 Univariate and multivariate analysis of factors associated with delayed gastric emptying
DGE, n = 83No DGE, n = 96Univariate P valueMultivariate P value
Age67.3 ± 14.568.8 ± 10.80.4
Gender (female)59 (n = 49)43.8 (n = 42)0.040.03
BMI26.8 ± 4.826.1 ± 50.39
RIGL (yes)9.6 (n = 8)45.8 (n = 44)0.001< 0.001
Chronic pancreatitis8.4 (n = 7)10.4 (n = 10)0.58
Alcohol abuse3.9 (n = 3)9 (n = 7)0.19
Pre-existent DM38.5 (n = 32)36.5 (n = 35)0.77
Jaundice53.7 (n = 44)44.8 (n = 43)0.24
Bilirubin total (mg/dL) (median)1.1 (0.4-4.5)0.8 (0.4-5.5)0.84
Malignancy78.3 (n = 65)74 (n = 71)0.50.88
Overall complications49.4 (n = 41)32.3 (n = 31)0.0190.04
Pancreatic leak26.5 (n = 22)31.3 (n = 30)0.480.5
Bile leak22.9 (n = 19)16.7 (n = 16)0.29
Pneumonia20.5 (n = 17)9.4 (n = 9)0.030.18
Length of hospital stay (d) (median)14 (11-22)10 (8-14)< 0.001
Postoperative mortality4.8 (n = 4)5.2 (n = 5)0.9