| Number of patients | Mean lowest oxygen saturation (%) | Mean neck circumference (cm) |
AHI < 5 | 14 | 93.5 ± 2.2 | 34.7 ± 4.7 |
AHI 5 - <15 | 25 | 89.3 ± 5.6 | 36.7 ± 4.0 |
AHI 15 - <30 | 9 | 84.7 ± 5.3 | 38.1 ± 5.4 |
AHI ≥ 30 | 3 | 79.3 ± 5.0 | 41.7 ± 3.1 |
Overall patients | 51 | 89.7 ± 6.0 | 36.6 ± 4.6 |