Driving-Related Neuropsychological Performance in Stable COPD Patients

Table 2

Driving-related neuropsychological testing performance data in normal subjects and COPD patients.

Parameters	Normal subjects (𝑛=10)	COPD patients (𝑛=35)	𝑃 value
SA, (% ile)	32.5 (19–39)	23.9 (9.3–34.8)	NS
RT-V, (% ile)	89 (82–89)	76 (53.8–88.5)	𝑃=0.035
MR-V, (% ile)	79.2 (12.2)	59.8 (18.7)	𝑃=0.004
Total RT-V, (% ile)	82 (79–87.5)	64.5 (59.3–76.5)	𝑃<0.0001
RT-A, (% ile)	84.5 (70–97)	68 (46–83.5)	𝑃=0.035
MR-A, (% ile)	72.6 (22)	49.2 (24.7)	𝑃=0.01
Total RT-A, (% ile)	78.3 (14.2)	56.9 (21.6)	𝑃=0.0052
PA, (% ile)	26.5 (17–38)	18 (6–34)	NS
TAVTMB, (% ile)	25 (21–62)	18 (7–24)	𝑃=0.003
Driving ability, accepted/rejected	8/2	13/22	𝑃=0.029

Values are mean ± SD or median (range).
Abbreviations: SA: selective attention; RT-V: reaction time to visual stimuli; MR-V: motor time to visual stimuli; Total RT-V: the sum of reaction and motor time to visual stimuli; RT-A: reaction time to audio stimuli; MR-A: motor time to audio stimuli; Total RT-A: the sum of reaction and motor time to audio stimuli; PA: permanent attention; TAVTMB: tachistoscopic traffic test; 𝑃≤0.05, statistically significant; NS: nonsignificant.