Interobserver Variability in the International Study Group for Pancreatic Surgery (ISGPS)-Defined Complications After Pancreatoduodenectomy
Abstract
Objective: To determine the interobserver variability for complications of pancreatoduodenectomy as defined by the International Study Group for Pancreatic Surgery (ISGPS) and others. Background: Good interobserver variability for the definitions of surgical complications is of major importance in comparing surgical outcomes between and within centers. However, data on interobserver variability for pancreatoduodenectomy-specific complications are lacking. Methods: International cross-sectional multicenter study including 52 raters from 13 high-volume pancreatic centers in 8 countries on 3 continents. Per center, 4 experienced raters scored 30 randomly selected patients after pancreatoduodenectomy. In addition, all raters scored 6 standardized case vignettes. This variability and the “within centers” variability were calculated for 2-fold scoring (no complication/grade A vs grade B/C) and 3-fold scoring (no complication/grade A vs grade B vs grade C) of postoperative pancreatic fistula, postpancreatoduodenectomy hemorrhage, chyle leak, bile leak, and delayed gastric emptying. Interobserver variability is presented with Gwet AC-1 measure for agreement. Results: Overall, 390 patients after pancreatoduodenectomy were included. The overall agreement rate for the standardized cases vignettes for 2-fold scoring was 68% (95% CI: 55%–81%, AC1 score: moderate agreement), and for 3-fold scoring 55% (49%–62%, AC1 score: fair agreement). The mean “within centers” agreement for 2-fold…
How strong is the evidence?
Evidence Hub reads this as a cross-sectional. Its evidence level is 4 of 5 (Low · observational). Observational designs can show an association but not prove cause. Reported size: 390 participants or records.
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