| WHO Functional Class | BNP < 124 pg/ml, n | BNP > 124 pg/ml, n | BNP mean, pg/ml |
|---|---|---|---|
| Group 1, n=2 | 1 | 1 | 1534 |
| Group 2, n=5 | 1 | 4 | 1800 |
| Group 3, n=47 | 16 | 30 | 799 |
| Group 3B, n=22 | 4 | 18 | 4283 |
| Group 4, n=29 | 3 | 27 | 3388 |
| WHO Group Category | BNP < 124 pg/ml, n | BNP > 124 pg/ml, n | BNP mean, pg/ml |
| Group 1, n=36 | 9 | 27 | 2589 |
| Group 2, n=29 | 6 | 23 | 1421 |
| Group 3, n=5 | 1 | 3 | 582 |
| Group 4, n=4 | 0 | 4 | 15366* |
| Group 2+3, n=23 | 0 | 23 | 3792 |
Group 4 levels were significantly higher than Group 1–3 (P<0.05)