Age at evaluation (years; Mean ± SD) | 66.7 ± 6.3 |
Gender | 1134 (62%) Male |
 | 694 (38%) Female |
Race/ethnic group | 1727 (94%) Non-Hispanic white |
 | 73 (4%) Non-Hispanic black |
 | 28 (2%) Other |
FEV1 | Â |
   % of predicted (Mean ± SD) | 27.1 ± 7.5 |
   L (Mean ± SD) | 0.78 ± 0.25 |
DLCO | Â |
   % of predicted (Mean ± SD) | 28.2 ± 10.1 |
   ml/min/mmHg STPD (Mean ± SD) | 8.0 ± 3.2 |
Beck Depression Inventory (Mean ± SD) | 9.5 ± 6.0 |
Spielberger Anxiety Inventory - State (Mean ± SD) | 34.9 ± 10.9 |
6-Minute Walk Test (meters; Mean ± SD) | 344.2 ± 105.8 |
Maximum Exercise Capacity (watts; Mean ± SD) | 35.6 ± 21.9 |
St. George's Respiratory Questionnaire - total score (Mean ± SD) | 56.4 ± 13.1 |
UCSD Shortness of Breath Questionnaire (Mean ± SD) | 64.9 ± 19.4 |