nsrr_ever_smoker nsrr_ttldursp_f1

Histogram

Visit number vs Apnea-Hypopnea Index : (Apneas and hypopneas with >= 3% oxygen desaturation) / hour of sleep
N Mean StdDev Median Min Max Unknown Total
Baseline 315 25.1 ± 8.4 23.0 14.6 49.3 3 318
Follow-up - - - - - - - -