Cambridge Pulmonary Hypertension Outcome Review(CAMPHOR) scores by New York Heart Association functional class
| Class | Subjects n | Utility Index | Symptoms | Functioning | QoL |
| I | 35 | 0.89±0.17# | 1.5±2.5 | 1.9±2.7 | 2.1±3.9 |
| II | 196 | 0.71±0.26# | 8.5±5.3¶ | 7.6±4.9¶ | 7.2±5.8¶ |
| III | 458 | 0.46±0.26# | 14.0±5.5¶ | 13.6±5.9¶ | 12.7±6.1¶ |
| IV | 62 | 0.30±0.18 | 17.2±4.8¶ | 20.3±5.2¶ | 16.3±5.5¶ |
Data are presented as mean±sd. QoL: quality of life. #: p<0.01 (higher) versus class below; ¶: p<0.01 (higher) versus class above.