| Audit point | 2010 n=20 | 2011, n=19 |
| Decision to apply NIV by registrar or above | 100% | 100% |
| Plan if NIV fails (on initiation) | 55% | 89% |
| IPAP by the end of 1st hour ≥ 20 | 49% | 71% |
| EPAP by the end of 1st hour ≥ 5 | 68% | 76% |
| NIV success | 70% | 74% |
| All cause mortality | 40% | 26% |
| Median length of stay | 11 days | 7 days |
| Mean length of stay | 15 days | 12 days |