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Table 4 Analysis of variance results comparing laser and cold dissection particle counts

From: ‘The air that we breathe’: assessment of laser and electrosurgical dissection devices on operating theater air quality

Metric

Location

Laser median

Cold dissection median

ANOVA results

PM2.5 (μg/m3)

Hallway

2.00

2.00

P >0.05

OR

3.00

2.00

P < 0.05

Roof

23.0

9.00

P > 0.05

UFPs (particle #/cm3)

Hallway

564

655

P > 0.05

OR

462

415

P > 0.05

Roof

14105

7902

P < 0.05

Fine particle number count (particle #/cm3)

Hallway

0.45

0.42

P > 0.05

OR

0.43

0.36

P < 0.05

Roof

14.53

  

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

  
  1. Roof top outdoor counts were unavailable for coarse and fine particles during cold dissection. PM = particulate matter, UFP = ultrafine particles.