Table 1

Characteristics of patients at baseline

Oxygen alone (n=20)Oxygen + NO (n=20)p value
Values are mean (SD).
LTOT=long term oxygen therapy.
Age (years)61.2 (8.7)62.0 (7.6)0.882
F:M6:147:131.000
Non-smoker at study entry (n)2020
Weight (kg)83.7 (19.3)87.1 (18.8)0.516
Height (cm)168.2 (7.9)169.1 (6.4)0.578
Duration of symptoms (years)10.0 (6.2)7.9 (4.4)0.125
Duration of LTOT (weeks)99.1108.50.576