Name
oai4p
Label
Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events

Calculation
oai4p = 60 * ( oarbp4 + oarop4 + oanbp4 + oanop4 ) / slpprdp
Units
events per hour
Type
numeric
Sleep Heart Health Study (SHHS) 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 1 5,106 2.7 ± 6.6 0.4 0.0 88.8 698 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 2.9 ± 6.4 0.5 0.0 66.3 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,106 2.7 ± 6.6 0.4 0.0 88.8 698 5,804
35-44 years 294 1.4 ± 4.8 0.0 0.0 49.7 48 342
45-54 years 903 1.8 ± 6.4 0.1 0.0 88.8 114 1,017
55-64 years 1,589 2.7 ± 7.2 0.3 0.0 75.8 180 1,769
65-74 years 1,426 3.0 ± 6.6 0.6 0.0 85.0 191 1,617
75-84 years 809 3.5 ± 6.4 0.9 0.0 51.3 146 955
85 years or older 85 4.7 ± 7.3 1.7 0.0 31.3 19 104
Gender of the participant vs Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,106 2.7 ± 6.6 0.4 0.0 88.8 698 5,804
Male 2,442 3.9 ± 8.2 0.8 0.0 88.8 323 2,765
Female 2,664 1.6 ± 4.6 0.2 0.0 76.1 375 3,039
Gender of the participant vs Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 2.9 ± 6.4 0.5 0.0 66.3 1,429 4,080
Male 1,226 3.9 ± 7.8 0.9 0.0 61.9 635 1,861
Female 1,425 2.0 ± 4.7 0.3 0.0 66.3 794 2,219
Race of the participant vs Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,106 2.7 ± 6.6 0.4 0.0 88.8 698 5,804
White 4,327 2.7 ± 6.5 0.4 0.0 85.0 580 4,907
Black 437 3.3 ± 8.1 0.4 0.0 88.8 78 515
Other 342 2.2 ± 6.2 0.2 0.0 50.7 40 382
Race of the participant vs Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 2.9 ± 6.4 0.5 0.0 66.3 1,429 4,080
White 2,311 2.9 ± 6.4 0.5 0.0 66.3 1,276 3,587
Black 181 3.5 ± 6.9 0.6 0.0 45.8 75 256
Other 159 1.9 ± 5.1 0.2 0.0 39.0 78 237