Table 1.

—Demographic and Baseline Clinical Features of the Multicenter Cohort

Cohort Characteristics (N = 131)	Distribution
White race	119 of 131 (91)
Age at transplant, y	55 (45, 61)
Female sex	64 of 131 (49)
Indication for lung transplant
COPD	66 of 131 (50)
Cystic fibrosis	22 of 131 (17)
Idiopathic pulmonary fibrosis	28 of 131 (21)
Other	15 of 131 (12)
History of smokinga	89 of 131 (68)
Daily continuous oxygen usea	100 of 129 (78)
Continuous oxygen amount,a L/min	3.0 (2.0, 3.0)
Mechanical ventilation use immediately  prior to transplant	5 of 131 (4)
Noninvasive ventilation use immediately  prior to transplant	3 of 130 (2)
FEV1,a L	0.79 (0.57, 1.25)
FVC,a L	2.02 (1.52, 2.49)
6-min walk test,a m	353 (288, 422)
Bilateral lung transplant	87 of 131 (66)

Data are presented as No. (%) for categorical variables and median (25th, 75th percentile) for continuous variables.

^aPrior to lung transplantation.