Table 4.

Procedure groups with high levels of disagreement among sources on aerosol-generating status

Procedure group	Aerosol source	N of sources mentioning procedures in this group	n (%) of sources that classified procedures in this group as aerosol-generating	n (%) of sources that classified procedures in this group as possibly aerosol-generating	n (%) of sources that classified procedures in this group as not aerosol-generating
Oral and dental procedures	Oronasal	40	31 (78)	0 (0)	9 (22)
Upper gastrointestinal endoscopy	Upper gastrointestinal	10	5 (50)	2 (20)	3 (30)
Thoracic surgery and procedures	Wound/invasive procedure	14	4 (29)	2 (14)	8 (57)
Nasopharyngeal and oropharyngeal swabbing	Oronasal	34	9 (27)	10 (29)	15 (44)

Percentages were rounded to the nearest full percentage point.