Name
oai4p
Label
Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculation
oai4p = 60 * ( oarbp4 + oarop4 + oanbp4 + oanop4 ) / slpprdp
Units
events per hour
Type
numeric
Visit number vs Obstructive Apnea Index: (Obstructive apneas with >= 4% 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 2.5 ± 5.6 0.4 0.0 63.7 - 461
Age (categorical) vs Obstructive Apnea Index: (Obstructive apneas with >= 4% 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 2.5 ± 5.6 0.4 0.0 63.7 - 455
75-84 years 325 2.4 ± 5.3 0.5 0.0 63.7 - 325
85 years or older 130 2.8 ± 6.3 0.4 0.0 44.4 - 130
Gender vs Obstructive Apnea Index: (Obstructive apneas with >= 4% 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 2.5 ± 5.6 0.4 0.0 63.7 - 461
Female 461 2.5 ± 5.6 0.4 0.0 63.7 - 461