Table 2.

Incidence and location of pulmonary embolisms stratified by ancestral strain and variants (n = 720).

	Total	Ancestral strain	Alpha variant	Delta variant	Omicron variant	P value
Frequency of pulmonary embolism	76/720 (11%)	42/358 (12%)	5/60 (8%)	16/152 (11%)	13/150 (9%)	.75*
Most proximal anatomical location
Main/lobar	19/76 (25%)	13/42 (31%)	2/5 (40%)	1/16 (6%)	3/13 (23%)	.41*
Segmental	46/76 (61%)	22/42 (52%)	3/5 (60%)	12/16 (75%)	9/13 (69%)
Subsegmental	11/76 (14%)	7/42 (17%)	0/5 (0%)	3/16 (19%)	1/13 (8%)

^*Fisher exact test was performed among ancestral strain, Alpha variant, Delta variant, and Omicron variant.