Table 1.

Core-set Variable with Corresponding Globally Validated Criteria for iAE Reporting.

CORE-SET VARIABLE DESCRIPTION	ICARUS GLOBAL SURGICAL COLLABORATION CRITERIA SATISFIED AS REFERENCE
Any iAE occurred? 0 = no 1 = yes	Criterium 1: In a study reporting perioperative outcomes, the intraoperative adverse events (iAEs) should be reported as one of the outcomes of interest
iAE description (if any)	Criterium 2: The intraoperative adverse events (iAEs) and the definition of each specific iAE should be reported or referenced in the methods section
Type of iAE 1 = Surgical/interventional; 2 = Anesthesiologic; 3 = Nursing	Criterium 5: Surgical, anesthesiology and nursing intraoperative adverse events (iAEs) should be reported separately.
Severity Grade of iAE 1 = I 2 = II 3 = III 4 = IV 5 = V	Criterium 3: Each intraoperative adverse event (iAE) should be reported using one of the published classification systems Criterium 4: Each intraoperative adverse event (iAE) should be reported separately by grade
Surgical step or anesthesiologic or nursing maneuver affected by (if any)	Criterium 9: The intraoperative adverse events (iAEs) should be reported specifying the surgical step or the anesthesiologic maneuver that was associated with or affected by the iAEs
Patient or disease predisposing factors (if any)	Criterium 7: When available, patient/disease characteristics or conditions possibly associated with intraoperative adverse events (iAEs) should be reported.
Change from the ideal approach: 0 = None 1 = Technique 2 = Conversion	Criterium 8: When the intraoperative adverse event (iAEs) requires an approach or technique conversion, both the iAEs that caused the conversion and the action undertaken should be reported.
Description of the corrective action undertaken (if any)	Criterium 8: When the intraoperative adverse event (iAEs) requires an approach or technique conversion, both the iAEs that caused the conversion and the action undertaken should be reported. Criterium 11: The management of the intraoperative adverse events (iAEs) should be reported
Timing of the iAE assessment: 1 = during OR time 2 = after OR time	Criterium 10: The timing of the intraoperative adverse events (iAEs) assessment should be reported as follows: a) If an iAE is recognized during the surgical procedure: debriefing after the surgical procedure for iAEs that are recognized intraoperatively b) If an iAE is not recognized during the surgical procedure report the point at which the iAE became apparent in the postoperative course
Post-operative consequence: 1 = Without post-op consequence 2 = With non-permanent post-op consequence 3 = With a permanent post-op consequence 4 = Requiring a re-operation 5 = Post-op death	Criterium 12: The postoperative consequence of a given intraoperative adverse events (iAEs) in the postoperative course should be reported as follow: a) Without post-operative consequence b) With non-permanent post-operative consequence c) With a permanent post-operative consequence d) Requiring a re-operation e) Post-operative death
Changes in clinical course and/or follow up due to the iAE (if any)	Criterium 13: Report changes to the clinical course and/or follow-up that were associated with any intraoperative adverse events (iAEs)