Table 2.
AHI and AI for different sensors and hypopnea scoring criteria
| Apnea sensor | Hypopnea definition | Median AIa | Mean AIb | Median AHIa | Mean AHIb |
|---|---|---|---|---|---|
| Thermal | Recommended | 2.1 (0.5, 9.4) | 10.3 ± 18.4 | 6.7 (1.4, 21.0) | 16.9 ± 23.2 |
| Alternative | 2.1 (0.5, 9.4) | 10.3 ± 18.4 | 11.5 (4.0, 30.7) | 22.1 ± 25.0 | |
| Nasal pressure | Recommended | 6.1 (1.0, 15.9) | 15.6 ± 22.7 | 9.2 (2.2, 26.4) | 19.5 ± 24.4 |
| Alternative | 6.1 (1.0, 15.9) | 15.6 ± 22.7 | 13.0 (4.0, 33.1) | 23.5 ± 25.8 |
AHI, apnea-hypopnea index; AI, apnea index.
a
Values are shown as median (interquartile range)/h. P < 0.001 for all pair-wise comparisons of thermal vs pressure sensors.
b
Values are shown as mean (± SD)/h.