Table
| Â | Â | Pressure deviation (cmH2O) from CPAP level at 25 l/min flow | ||
|---|---|---|---|---|
CPAP delivery system | Subjective ranking | Inspiration | Expiration | Overall |
Respironics Vision | 1 | -0.8 | -0.1 | 0.6 |
Respironics S/T | 2 | -0.6 | 0.1 | 0.8 |
Drager Evita 4 (NIV) | 3 | -1.1 | 1.3 | 2.4 |
Drager Evita 4 | 4 | -1.1 | 1.3 | 2.5 |
Drager CF 800 | 5 | -1.3 | 0.7 | 2.0 |
Siemens Servo 300 | 6 | -1.1 | 2.3 | 3.4 |
Spearman Correlation with ranking P value | Â | -0.76 | 0.83 | 0.89 |
| Â | Â | 0.084 | 0.04 | 0.017 |