Bland–Altman plots summary
| Total population | High-risk population | |||
|---|---|---|---|---|
| Δ AHI—PM-AHI | 95% CI | Δ AHI—PM-AHI | 95% CI | |
| PM-AHI1 | 1.3 | −8.2 to 10.8 | 1.7 | −8.6 to 11.9 |
| PM-AHI2 | −3.5 | −14.0 to 7.0 | −3.0 | −14.9 to 8.8 |
| PM-AHI3 | 7.6 | −7.0 to 22.2 | 8.7 | −7.5 to 24.9 |
| PM-AHI4 | 2.8 | −11.7 to 17.4 | 4.0 | −12.4 to 20.4 |
AHI, the polysomnography apnoea–hypopnoea index; PM-AHIx, the portable monitor apnoea–hypopnoea indices; PSG, polysomnography; ΔAHI—PM-AHI, the difference between the polysomnography and the portable monitor apnoea–hypopnoea index (positive numbers show an underestimation of PSG-AHI by PM-AHI, negative numbers the opposite).