Table 1:

Overview of steps and participants in the PANELVIEW tool development

Step	Method	Sources and participants	No. of resulting items
1. Item generation	Systematic review	17 articles	694
	Contacting guideline developers	3 source documents from 19 developers (AAO-HNS, ACP, CAR, CCO, CDC, Chile MoH, Colombia MoH, CTFPHC, DCGP, FMSD, KP, NHMRC, NICE, NKCHS, OPHA, RKIG, SIGN, South Africa MoH, USPSTF)
	Key informant survey	62 panellists: 13 panels (WHO, KSA MoH)
2. Item reduction	Key informant survey	9 panellists and guideline methodologists: 3 panels (WHO, WAO, CCO)	95
	Key informant interview	13 panellists and guideline methodologists: 2 panels (WAO, EHIF)
	Expert review and consensus	Study team experts and guideline methodologists
3. Response phrasing	Key informant survey	26 panellists and guideline methodologists: 3 workshops, 1 panel (AGA)	34
4. Field testing	Use of tool with working panels	12 panellists, 1 pilot panel (NHF) 94 panellists, 8 panels (AABB,^* ADA, RA Adaptation, RARE-Bestpractices, WHO)	34

Note: AAO-HNS = American Academy of Otolaryngology–Head and Neck Surgery, ACP = American College of Physicians, ADA = American Dental Association, AGA = American Gastroenterological Association, CAR = Canadian Association of Radiologists, CCO = Cancer Care Ontario, CDC = Centers for Disease Control and Prevention, CTFPHC = Canadian Task Force on Preventive Health Care, DCGP = Dutch College of General Practitioners, EHIF = Estonian Health Insurance Fund, FMSD = Finnish Medical Society Duodecim, KP = Kaiser Permanente, KSA = Kingdom of Saudi Arabia, MoH = Ministry of Health, NHF = National Hemophilia Foundation, NHMRC = National Health and Medical Research Council Australia, NICE = National Institute for Health and Care Excellence, NKCHS = Norwegian Knowledge Centre for the Health Services, OPHA = Ontario Public Health Agency, RA Adaptation = Rheumatoid Arthritis Guideline Adaptation for the Eastern Mediterranean Region, RKIG = Robert Koch Institute Germany, SIGN = Scottish Intercollegiate Guidelines Network, USPSTF = US Preventive Services Task Force, WAO = World Allergy Organization, WHO = World Health Organization.
↵* Formerly the American Association of Blood Banks.