Table 2 Demographic and Medical Data
|  | Mean ± SD | Range |
|---|---|---|
Gender (% female) (n = 25) | 83% | Â |
Education (years) | 13.6 ± 3.0 | 6 to 20 |
Age (years) | 49.7 ± 13.9 | 20 to 69 |
Time Since Diagnosis (years) | 1.8 ± 1.5 | 0.8 to 5.3 |
PaO2 mmHg | 62.6 ± 13.5 | 38 to 97 |
Most recent 6 minute walk (meters) | 455 ± 132 | 227 to 877 |
New York Heart Functional Class (N) | Â | Â |
   Class 1 | 0 |  |
   Class 2 | 3 |  |
   Class 3 | 20 |  |
   Class 4 | 0 |  |
Supplemental Oxygen (N) | Â | Â |
   2 Liters per minute | 7 |  |
   3 Liters per minute | 8 |  |
   4 Liters per minute | 4 |  |