Histogram
Visit Number vs Apnea-Hypopnea Index : (All apneas + hypopneas with >=50% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep
| N | Mean | StdDev | Median | Min | Max | Unknown | Total | |
|---|---|---|---|---|---|---|---|---|
| Baseline | 453 | 7.8 | ± 5.9 | 5.7 | 1.1 | 33.8 | - | 453 |
| Follow-up | 407 | 4.6 | ± 7.9 | 2.2 | 0.0 | 73.7 | 46 | 453 |