nsrr_ahi_hp4r nsrr_phrnumar_f1

Histogram

Visit Number vs Apnea-Hypopnea Index : (All apneas + hypopneas with >= 4% oxygen desaturation) / hour of sleep
N Mean StdDev Median Min Max Unknown Total
Baseline 453 5.1 ± 4.7 3.4 0.0 30.0 - 453
Follow-up 407 3.1 ± 6.3 1.4 0.0 72.3 46 453