Spinal fusion is an aerosol generating procedure

Table 3 Logistic regression analysis of surgical steps of interest for 10 μm/m³ particle counts

Variable	OR	Lower 95%	Upper 95%	Z score	P value
Bovie	0.3	0.2	0.4	-6.0	< 0.001
Burring	1.0	0.4	2.2	0.0	0.962
Drilling	0.2	0.1	0.7	-2.5	0.011
Bone scalpel	1.3	0.3	5.7	0.4	0.724
Max in room	1.7	0.9	3.5	1.6	0.111
Sensor distance	0.02	0.001	0.2	-3.0	0.003

OR: Odds ratios.