Table 1

Case identification and confirmation strategies across participating study sites and the Vascular Quality Initiative (VQI)

	Study sites
Study steps	Weill Cornell	Dartmouth-Hitchcock	Duke	OneFlorida	VQI
Case Identification Strategy	EMR Search: CPT 0245T (endovascular repair of iliac artery bifurcation)	Record of institutional IBE device implantations obtained from local Gore representative	Duplicate queries of EMR and surgical finance records using Gore IBE device catalogue numbers as search terms	Search 1: Query of Unique Device Identification System using Gore IBE and VBX stent graft device catalogue numbers Search 2: Qualitative query of OR supply usage and case data fields with search criteria: ‘Gore’ and ‘endovascular’ or ‘endoprosthesis’ and ‘VBX’ or ‘ILIAC’	VQI Search: ‘Device’=gore, and ‘iliac distal endpoint’=external and internal (branched)
Case Confirmation	Chart review confirmation of IBE+VBX stent graft	Chart review confirmation of IBE+VBX stent graft	Chart review confirmation of IBE+VBX stent graft	Chart review confirmation of IBE+VBX stent graft	IBE and VBX stent graft devices implanted on the same laterality; VBX stent graft implanted in internal iliac artery

EMR, electronic medical record; IBE, Iliac Branch Endoprosthesis; VBX, GORE® VIABAHN® VBX Balloon Expandable Endoprosthesis; VQI, Vascular Quality Initiative.