Comparative analysis; pre- v post-onset of NPPV†
| Clinical outcome | One year pre-NPPV | Annual decrease post-NPPV | 95% CI |
|---|---|---|---|
| Mean (SEM) | Mean (SEM) | ||
| †Data compare the year prior to and post-initiation of NPPV. | |||
| *p<0.05, **p<0.01. | |||
| No. of admissions to hospital per year | 4.1 (0.7) | 3.1 (0.8)* | 1.3 to 4.8 |
| No. of days in hospital per year | 48.0 (10.5) | 41.0 (8.6)** | 22.6 to 59.4 |
| No. of admissions to ICU | 1.1 (0.2) | 0.7 (0.2) | 0.2 to 1.2 |
| No. of days in ICU per year | 12.0 (3.5) | 8.1 (2.9)* | 1.8 to 14.4 |
| No. of nocturnal desaturations | 9.7 (3.4) | 8.9 (3.6) | 0.6 to 17.2 |
| Apnoea-hypopnoea index | 7.3 (3.5) | 4.5 (1.2) | 1.7 to 7.4 |
| Minimum nocturnal oxygen saturation | 66.2 (6.9) | −22.0 (7.1)* | −38.4 to −5.6 |
| Depth of nocturnal desaturations | 27.9 (6.5) | 21.4 (6.9)* | 5.5 to 37.4 |
| Baseline CO2 | 69.2 (4.1) | 16.3 (4.0)* | 7.1 to 25.6 |