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Retrospective Cohort Study
©The Author(s) 2023.
World J Gastrointest Surg. Aug 27, 2023; 15(8): 1652-1662
Published online Aug 27, 2023. doi: 10.4240/wjgs.v15.i8.1652
Table 2 Operative procedures between two drain types before and after matching cohorts
Operative procedureBefore matching
After matching
PG (n = 146)
NPI (n = 50)
P value
PG (n = 44)
NPI (n = 44)
P value
Pancreas injury-related, n (%)
    Peripancreatic drainage alone61 (41.8)22 (44.0)0.78419 (43.2)19 (43.2)1.000
    Distal pancreatectomy37 (25.3)10 (20.0)0.44510 (22.7)8 (18.2)0.597
    Distal pancreatectomy + splenectomy22 (15.1)9 (18.0)0.6246 (13.6)8 (18.2)0.560
    Pancreaticojejunostomy21 (14.4)7 (14.0)0.9478 (18.2)7 (15.9)0.777
    Whipple5 (3.4)2 (4.0)0.8501 (2.3)2 (4.5)1.000
Other intra-abdominal organ injury-related, n (%)
    Gastric or duodenal38 (26.0)6 (12.0)0.0405 (11.4)5 (11.4)1.000
    Jejunal or ileal25 (17.1)9 (18.0)0.8889 (20.5)9 (20.5)1.000
    Colorectal30 (20.5)11 (22.0)0.82810 (22.7)10 (22.7)1.000
    Parenchymal organ58 (39.7)12 (24.0)0.04511 (25.0)10 (22.7)0.803
    Vascular19 (13.0)13 (26.0)0.0329 (20.5)8 (18.2)0.787


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