Table 1.
LTRC subject demographics and lung function tests
| Control | COPD | IPF | |
|---|---|---|---|
| n | 348 | 465 | 213 |
| Age (mean (SD)) | 61.51 (12.53) | 63.35 (9.18) | 63.55 (8.37) |
| Sex = Female sex (%) | 211 (60.6) | 210 (45.2) | 64 (30.0) |
| Race (%) | |||
| White | 314 (90.2) | 423 (91.0) | 191 (89.7) |
| Asian | 0 ( 0.0) | 0 ( 0.0) | 4 ( 1.9) |
| Black | 22 ( 6.3) | 29 ( 6.2) | 8 ( 3.8) |
| Hispanic | 10 ( 2.9) | 9 ( 1.9) | 4 ( 1.9) |
| Other race | 2 ( 0.6) | 4 ( 0.9) | 6 ( 2.8) |
| BMI (mean (SD)) | 28.95 (5.97) | 26.30 (5.22) | 29.80 (5.44) |
| Ever Smoking (%) | 215 (67.8) | 415 (95.2) | 128 (65.3) |
| Pack years of smoking (mean (SD)) | 20.12 (27.32) | 47.16 (31.73) | 18.84 (24.18) |
| FEV1/FVC (mean (SD)) | 0.77 (0.06) | 0.45 (0.15) | 0.83 (0.07) |
| FEV1 pp (mean (SD)) | 95.87 (12.61) | 41.72 (20.27) | 65.91 (19.06) |
| FVC pp (mean (SD)) | 96.09 (12.69) | 68.36 (18.50) | 60.28 (17.75) |
| DLCO % (mean (SD)) | 73.22 (15.44) | 42.92 (18.87) | 38.04 (19.59) |
Abbreviations: COPD, chronic obstructive pulmonary disease; IPF, idiopathic pulmonary fibrosis; SD, standard deviation; BMI, body mass index; FEV1, forced expiratory volume in 1s; FVC, forced vital capacity; DLCO, diffusing capacity of the lungs for carbon monoxide as a percent predicted