Table 3 Analysis of variance results comparing laser and cautery particle counts

PM_2.5 (μg/m³)

Hallway

2.00

2.00

P < 0.05

OR

3.00

2.00

P < 0.05

Roof

23.0

22.0

P > 0.05

UFPs (particle #/cm³)

Hallway

564

668

P > 0.05

OR

462

798

P < 0.05

Roof

14105

11646

P > 0.05

Fine particle number count (particle #/cm³)

Hallway

0.45

0.42

P > 0.05

OR

0.43

0.32

P < 0.05

Roof

14.53

2.17

P < 0.05

Coarse particle number count (particle #/cm³)

Hallway

0.07

0.06

P < 0.05

OR

0.04

0.03

P < 0.05

Roof

0.60

0.13

P < 0.05