cai4p cardnba
Name
cai4pa
Label
Central Apnea Index: (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events

Calculation
cai4pa = 60 * ( carba4 + caroa4 + canba4 + canoa4 ) / slpprdp
Units
events per hour
Type
numeric
Tags
cai_ca4r_f1t2
Visit number vs Central Apnea Index: (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 8 456 0.2 ± 1.0 0.0 0.0 13.6 5 461
Age (categorical) vs Central Apnea Index: (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 450 0.2 ± 1.0 0.0 0.0 13.6 5 455
75-84 years 321 0.2 ± 1.1 0.0 0.0 13.6 4 325
85 years or older 129 0.2 ± 0.8 0.0 0.0 7.7 1 130
Gender vs Central Apnea Index: (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Visit 8
N Mean StdDev Median Min Max Unknown Total
Total 456 0.2 ± 1.0 0.0 0.0 13.6 5 461
Female 456 0.2 ± 1.0 0.0 0.0 13.6 5 461