Table 4.
AHI, AI, and HI characteristics as a Brand-Altman Plot
| Type III PM device | Type IV PM device | |
|---|---|---|
| AHI (PM) – AHI (PSG) | ||
| Lower limit line | – 26.67 (– 32.88, – 20.45) | – 38.07 (– 47.57, – 28.57) |
| Mean difference | – 8.52 (– 12.11, – 4.93) | – 6.29 (– 11.78, – 0.81) |
| Upper limit line | 9.62 (3.40, 15.84) | 25.48 (15.98, 34.98) |
| AI (PM) – AI (PSG) | ||
| Lower limit line | – 27.54 (– 34.49, – 20.59) | – 32.15 (– 42.59, – 21.71) |
| Mean difference | – 7.26 (– 11.27, – 3.25) | 2.76 (– 3.27, 8.79) |
| Upper limit line | 13.02 (6.07, 19.97) | 37.67 (27.23, 48.10) |
| HI (PM) – HI (PSG) | ||
| Lower limit line | – 18.19 (– 24.00, – 12.39) | – 30.40 (– 36.78, – 24.02) |
| Mean difference | – 1.26 (– 4.61, 2.09) | – 9.06 (– 12.74, – 5.37) |
| Upper limit line | 15.67 (9.87, 21.47) | 12.29 (5.91, 18.67) |
Values as given as means (confidence interval). AHI (PM), AI (PM), and HI (PM) show the results from type III or type IV PM devices; AHI (PSG), AI (PSG), and HI (PSG) show the results of PSG testing. AHI, apnea-hypopnea index; AI, apnea index; HI, hypopnea index; PM, portable monitor; PSG, polysomnography.