Table 5 The analysis of the concentration number of VOC and formaldehyde detected at different locations.

From: Investigating surgical smoke in otolaryngology operating rooms

Detection time

Sampling location

Mean

Standard deviation

p-value

At the beginning of the knife used

Main knife range

1.32

1.20

0.326

Outside the operation table

1.36

1.24

5–10 min after beginning

Main knife range

1.21

0.69

0.270

Outside the operation table

1.15

0.87

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