Table 1.

Baseline characteristics of the 40 subjects

Variable
Age, yrs	67.1 ± 5.7, 66.9 (63.7, 70.6)
Female(%)/Male(%)	23(57.5%) / 17 (42.5%)
Self-reported Ethnicity/Race
Non-Hispanic White Other	37 (92.5%) 3 (7.5%)
Years since diagnosis	4.3 ± 3.9, 2.9 (1.3, 6.5)
FVC%	61.2 ± 11.9, 62.5 (55.5, 66.5)
DLCO%	52.6 ± 14.9, 50.5 (42.5, 65.5)
Supplemental Oxygen
Any use Rest Exertion Sleep	31* 17 10 3
L-PF-35
Total Symptoms Dyspnea Cough Fatigue Impacts	35.8 ± 18.6, 37.1 (21.0, 50.7) 31.8 ± 15.9, 32.4 (20.8, 43.3) 22.6 ± 18.5, 17.3 (9.2, 37.9) 37.5 ± 19.5, 35.0 (25.0, 50.0) 35.2 ± 22.7, 41.7(16.7, 50.0) 39.9 ± 23.2, 39.4 (18.1, 55.0)
SGRQ
Total Symptoms Activities Impacts	45.8 ± 18.5, 49.9 (37.0, 58.2) 54.5 ± 19.4, 56.5 (40.9, 66.9) 60.6 ± 24.4, 66.5 (48.3, 79.7) 34.5 ± 19.0, 34.9 (20.3, 46.0)
UCSD SOBQ	43.5 ± 25.9, 48.5 (25.0, 63.5)

Values = mean ± standard deviation or median (interquartile limits); *1 subject missing; FVC% = percentage of the predicted forced vital capacity; DLCO% = percentage of the predicted diffusing capacity of the lung for carbon monoxide; L-PF-35 = 35-item Living with Pulmonary Fibrosis Questionnaire; SGRQ = St. George’s Respiratory Questionnaire; UCSD SOBQ = University of California San Diego Shortness of Breath Questionnaire