Table 1.
Background Characteristics
| Variable | Mean | SD |
|---|---|---|
| Age (years) | 67.1 | 8.3 |
| Men, n (%) | 100 (61.7) | |
| BMI | 28.9 | 6.4 |
| Ethnicity, n (% Whites) | 146 (90.1) | |
| Education, n (% beyond high school) | 94 (58.0) | |
| Married, n (%) | 105 (64.8) | |
| Lung disease duration (years) | 3.8 | 2.1 |
| Current smoker, n (%) | 26 (16.0) | |
| CCI | 2.1 | 1.7 |
| 6MWT – Total distance (in feet) | 345.9 | 106.3 |
| FEV1 (% predicted value) | 46.5 | 17.1 |
| Short-acting beta agonist medication, n (%) | 85 (52.5) | |
| Anti-depressant medication, n (%) | 43 (26.5) | |
| Anxiolytic medication, n (%) | 20 (12.3) |
Notes: Data are given as number (%) unless otherwise indicated. SD = standard deviation; BMI = Body Mass Index; CCI = Charlson Comorbidity Index; 6MWT = 6 Minute Walk Test; FEV1 = Forced Expiratory Volume.