Name
rdi2ps
Label
Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events

Calculation
rdi2ps = 60 * ( hrembp2 + hnrbp2 + carbp2 + canbp2 + oarbp2 + oanbp2 ) / ( remepbp + nremepbp )
Units
events per hour
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 4,221 28.7 ± 24.6 21.8 0.0 134.7 1,583 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,345 29.2 ± 24.9 22.5 0.0 180.0 1,735 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 4,221 28.7 ± 24.6 21.8 0.0 134.7 1,583 5,804
35-44 years 229 19.6 ± 23.3 12.5 0.0 120.0 113 342
45-54 years 686 21.9 ± 22.3 15.1 0.0 134.2 331 1,017
55-64 years 1,287 29.0 ± 25.2 21.4 0.0 124.4 482 1,769
65-74 years 1,194 31.8 ± 25.6 24.4 0.0 134.7 423 1,617
75-84 years 741 31.7 ± 22.8 27.1 0.0 120.0 214 955
85 years or older 84 34.8 ± 21.2 31.3 0.0 120.0 20 104
Gender of the participant vs Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 4,221 28.7 ± 24.6 21.8 0.0 134.7 1,583 5,804
Male 1,999 35.8 ± 25.7 30.6 0.0 132.3 766 2,765
Female 2,222 22.3 ± 21.6 16.2 0.0 134.7 817 3,039
Gender of the participant vs Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,345 29.2 ± 24.9 22.5 0.0 180.0 1,735 4,080
Male 1,085 37.0 ± 26.3 32.7 0.0 180.0 776 1,861
Female 1,260 22.5 ± 21.5 15.9 0.0 140.0 959 2,219
Race of the participant vs Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 4,221 28.7 ± 24.6 21.8 0.0 134.7 1,583 5,804
White 3,598 29.7 ± 24.8 23.1 0.0 134.2 1,309 4,907
Black 369 23.6 ± 23.4 17.1 0.0 134.7 146 515
Other 254 22.4 ± 21.9 16.8 0.0 120.0 128 382
Race of the participant vs Apnea-Hypopnea Index (Supine): Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and with >=2% oxygen desaturation and with or without arousal / hour of sleep in supine position from type II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,345 29.2 ± 24.9 22.5 0.0 180.0 1,735 4,080
White 2,032 30.0 ± 25.2 23.3 0.0 180.0 1,555 3,587
Black 163 25.4 ± 23.3 16.9 0.0 105.0 93 256
Other 150 22.5 ± 20.8 16.0 0.0 101.2 87 237