Results of the six minute walk test and distribution of oxygen desaturation by survival and New York Heart Association (NYHA) class
| Parameter | Total | Survival status | NYHA class | ||
| Reduction in Sa,O2 | Survivors | Nonsurvivors | NYHA II | NYHA III | |
| n | n=34 | n=25 | n=9 | n=7 | n=27 |
| 1–4% | 8 (24) | 8 (32) | 0 (0) | 2 (29) | 6 (22) |
| 5–9% | 8 (24) | 7 (28) | 1 (11) | 2 (29) | 6 (22) |
| ≥10% | 18 (53) | 10 (40) | 8 (89) | 3 (43) | 15 (56) |
| Distance walked m | |||||
| <300 m | 23 (68) | 15 (60) | 8 (89) | 3 (43) | 20 (74) |
| 300–600 m | 11 (32) | 10 (40) | 1 (11) | 4 (57) | 7 (26) |
Data are presented as n (% of total patients).