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Table 2 The influence of breath test performance in relation to the mean bias of the BAC and the estimated BrAC (BrAC est )

From: Assessment of the breath alcohol concentration in emergency care patients with different level of consciousness

 

N

Mean bias between the BAC and the BrAC est

Standard deviation

P-value

Forced expiration

10

−0.15

0.39

 

Non-forced expiration

57

0.05

0.32

0.09

Awake

63

−0.03

0.34

 

Sleeping or lowered level of consciousness

15

0.20

0.37

0.02

  1. A p-value < 0.05 was considered significant.