Changes in healthcare usage before and after home-NIV
| Pre-NIV | Post-NIV | n | P value | |
| Number of hospital admissions | 127 | 67 | 42 | 0.0005 |
| NIV users | 78 | 35 | 28 | 0.0015 |
| NIV non-users | 49 | 32 | 14 | 0.1477 |
| Occupied bed days | 1131 | 414 | 42 | <0.0001 |
| NIV users | 775 | 230 | 28 | 0.0005 |
| NIV non-users | 356 | 184 | 14 | 0.0254 |
| Respiratory nurse home visits | 69 | 67 | 24 | 0.9158 |
| NIV users | 41 | 43 | 14 | 0.7134 |
| NIV non-users | 28 | 24 | 10 | 0.8711 |
NIV, non-invasive ventilation .