Table 5.

One-Way ANOVA Post Hoc Analyses of Aerosol Generation for Powered Drilling Conditions.

Particle size range, µm	Condition 1	Condition 2	Mean difference,a particles/cm3	P value
0.30-0.37	Aloneb	Rigidc	6.86	<.001
		Rigid + ringd	7.05	<.001
		Rigid + SSES	7.01	<.001
0.37-0.47	Alone	Rigid	2.14	<.001
		Rigid + ring	2.12	<.001
		Rigid + SSES	2.21	<.001
0.47-0.58	Alone	Rigid	0.76	<.001
		Rigid + ring	0.73	<.001
		Rigid + SSES	0.74	<.001
0.58-0.72	Alone	Rigid	0.18	<.001
		Rigid + ring	0.21	<.001
		Rigid + SSES	0.26	<.001
	Rigid		8.11 × 10−2	.017
0.72-0.90	Alone	Rigid	0.11	<.001
		Rigid + ring	9.10 × 10−2	<.001
		Rigid + SSES	0.13	<.001
	Rigid + ring		4.25 × 10−2	.022
0.90-1.12	Alone	Rigid	8.78 × 10−2	<.001
		Rigid + ring	5.13 × 10−2	<.001
		Rigid + SSES	9.43 × 10−2	<.001
	Rigid	Rigid + ring	−3.65 × 10−2	.003
	Rigid + ring	Rigid + SSES	4.30 × 10−2	<.001
1.12-1.39	Alone	Rigid	2.71 × 10−2	<.001
		Rigid + ring	3.26 × 10−2	<.001
		Rigid + SSES	3.91 × 10−2	<.001
1.39-1.73	Alone	Rigid	3.71 × 10−2	<.001
		Rigid + ring	4.87 × 10−2	<.001
		Rigid + SSES	6.97 × 10−2	<.001
	Rigid		3.25 × 10−2	<.001
	Rigid + ring		2.10 × 10−2	.049
1.73-2.16	Alone	Rigid	3.81 × 10−2	<.001
		Rigid + ring	1.81 × 10−2	.025
		Rigid + SSES	3.86 × 10−2	<.001
	Rigid	Rigid + ring	−2.00 × 10−2	.009
	Rigid + ring	Rigid + SSES	2.05 × 10−2	.007
2.16-2.69	Alone	Rigid	2.41 × 10−2	<.001
		Rigid + ring	3.26 × 10−2	<.001
		Rigid + SSES	3.46 × 10−2	<.001
2.69-3.34	Alone	Rigid + SSES	1.76 × 10−2	<.001
	Rigid		1.65 × 10−2	<.001
	Rigid + ring		1.35 × 10−2	.005
Total	Alone	Rigid	10.3	<.001
		Rigid + ring	10.4	<.001
		Rigid + SSES	10.7	<.001

Abbreviations: ANOVA, analysis of variance; SSES, surgical smoke evacuation system.

^aCondition 1 – condition 2.

^bAlone indicates endonasal powered drilling without suction.

^cRigid indicates rigid suction device.

^dRing indicates suction ring.