Name
rdi4ps
Label
Apnea-Hypopnea Index (Supine): (Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep in supine position from type I polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events.

Calculation
rdi4ps = 60 * ( hrembp4 + hnrbp4 + carbp4 + canbp4 + oarbp4 + oanbp4 ) / ( remepbp + nremepbp )
Units
events per hour
Type
numeric
Visit vs Apnea-Hypopnea Index (Supine): (Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep in supine position from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 5 694 10.1 ± 18.5 2.0 0.0 120.0 41 735
Participant's age (category) vs Apnea-Hypopnea Index (Supine): (Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep in supine position from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 619 10.2 ± 18.5 2.0 0.0 120.0 39 658
5-14 yrs old 60 0.7 ± 1.6 0.09 0.0 10.6 4 64
15-24 yrs old 108 1.8 ± 6.1 0.4 0.0 60.0 4 112
25-34 yrs old 61 10.4 ± 20.6 1.2 0.0 87.6 1 62
35-44 years 94 14.3 ± 23.2 3.2 0.0 110.8 4 98
45-54 years 138 12.7 ± 19.6 4.4 0.0 104.8 10 148
55-64 years 77 12.0 ± 16.3 5.7 0.0 67.5 7 84
65-74 years 49 15.2 ± 18.2 8.6 0.0 71.3 8 57
75-84 years 30 20.9 ± 27.3 8.3 0.0 120.0 1 31
85 years or older 2 27.0 ± 38.2 27.0 0.0 54.0 - 2
Participant's sex vs Apnea-Hypopnea Index (Supine): (Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep in supine position from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 694 10.1 ± 18.5 2.0 0.0 120.0 41 735
Female 380 6.0 ± 11.1 1.3 0.0 78.3 26 406
Male 314 15.1 ± 23.7 3.9 0.0 120.0 15 329
Participant's race vs Apnea-Hypopnea Index (Supine): (Apneas with >= 4% oxygen desaturation and with or without arousal + hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep in supine position from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 694 10.1 ± 18.5 2.0 0.0 120.0 41 735
White 293 10.5 ± 19.0 2.1 0.0 110.8 11 304
Black 382 10.1 ± 18.4 2.0 0.0 120.0 27 409
More than one race 19 4.7 ± 9.9 0.4 0.0 34.2 3 22