Driving-Related Neuropsychological Performance in Stable COPD Patients

Table 1

Anthropometric characteristics and respiratory function data of normal subjects and COPD patients.

Parameters	Normal subjects (𝑛=10)	COPD patients (𝑛=35)	𝑃 value
Age, (yrs)	55 (5)	59 (7)	NS
Gender, M/F	8/2	26/9	NS
Ht, (m)	1.7 (0.05)	1.7 (0.07)	NS
Wt, (kg)	78 (8)	77 (14)	NS
Wt, (% pred)	109 (10)	106 (15)	NS
BMI	27.4 (2.7)	26.5 (3.7)	NS
FVC, (% pred)	105 (12)	86 (20)	𝑃=0.007
FEV1, (% pred)	100 (11)	45 (22)	𝑃<0.001
FEV1/FVC, %	77 (4)	40 (14)	𝑃<0.001
IC, (% pred)	103 (18)	81 (17)	𝑃<0.001
TLC, (% pred)	93 (8)	100 (15)	NS
FRC, (% pred)	89 (12)	120 (0.0)	𝑃=0.002
RV, (% pred)	74 (14)	123 (42)	𝑃<0.001
DLCO, (% pred)	103 (12)	60 (22)	𝑃<0.001
PaO2 (mm Hg)		77 (12)
PaCO2 (mm Hg)		41 (6)
SpO2 %	98 (97–99)	95 (94–96)	𝑃<0.001
IQ (% ile)	90 (75–95)	80 (63–95)	NS

Values are mean (SD) or median (range).
Abbreviations: Ht: height; Wt: weight; BMI: body mass index; SpO₂ %: arterial oxygen saturation measured with pulse arterial oximeter; IQ: intelligent quotient; 𝑃≤0.05, statistically significant; NS: nonsignificant.