ahi_a0h4a ahi_c0h3a
Name
ahi_c0h3
Label
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events.

Calculation
ahi_c0h3 = 60 * (hrembp3 + hrop3 + hnrbp3 + hnrop3 + carbp + carop + canbp + canop) / slpprdp
Units
events per hour
Type
numeric
Tags
cahi_ca0uhp3x3u_f1t2
Visit number vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 8 461 12.8 ± 12.0 9.2 0.0 74.9 - 461
Age (categorical) vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 455 12.6 ± 11.6 9.2 0.0 71.9 - 455
75-84 years 325 11.9 ± 11.1 8.8 0.2 71.9 - 325
85 years or older 130 14.4 ± 12.6 10.6 0.0 55.8 - 130
Gender vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 461 12.8 ± 12.0 9.2 0.0 74.9 - 461
Female 461 12.8 ± 12.0 9.2 0.0 74.9 - 461