ahi_a0h4a ahi_c0h3a
Name
ahi_c0h3
Label
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events.

Calculation
ahi_c0h3 = 60 * (hrembp3 + hrop3 + hnrbp3 + hnrop3 + carbp + carop + canbp + canop) / slpprdp
Units
events per hour
Type
numeric
Tags
cahi_ca0uhp3x3u_f1t2
Sleep Heart Health Study (SHHS) Visit Number vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,804 10.7 ± 10.7 7.5 0.0 101.7 - 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 12.7 ± 11.6 9.4 0.0 100.4 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% 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 5,804 10.7 ± 10.7 7.5 0.0 101.7 - 5,804
35-44 years 342 7.8 ± 9.7 4.3 0.0 57.3 - 342
45-54 years 1,017 9.0 ± 10.3 5.6 0.0 86.3 - 1,017
55-64 years 1,769 10.7 ± 10.8 7.2 0.0 73.0 - 1,769
65-74 years 1,617 11.7 ± 11.1 8.8 0.0 101.7 - 1,617
75-84 years 955 11.6 ± 10.1 8.9 0.0 63.2 - 955
85 years or older 104 11.7 ± 9.5 8.6 0.0 46.4 - 104
Gender of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% 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 5,804 10.7 ± 10.7 7.5 0.0 101.7 - 5,804
Male 2,765 13.2 ± 11.2 10.4 0.0 86.3 - 2,765
Female 3,039 8.3 ± 9.6 5.4 0.0 101.7 - 3,039
Gender of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% 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 12.7 ± 11.6 9.4 0.0 100.4 1,429 4,080
Male 1,226 15.6 ± 12.3 12.4 0.0 84.5 635 1,861
Female 1,425 10.2 ± 10.4 7.2 0.0 100.4 794 2,219
Race of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% 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 5,804 10.7 ± 10.7 7.5 0.0 101.7 - 5,804
White 4,907 10.8 ± 10.8 7.7 0.0 101.7 - 4,907
Black 515 10.2 ± 10.6 6.5 0.0 70.6 - 515
Other 382 9.0 ± 9.0 6.0 0.0 43.9 - 382
Race of the participant vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% 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 12.7 ± 11.6 9.4 0.0 100.4 1,429 4,080
White 2,311 12.9 ± 11.7 9.6 0.0 100.4 1,276 3,587
Black 181 11.6 ± 11.0 7.7 0.0 56.1 75 256
Other 159 11.4 ± 11.3 8.9 0.0 72.9 78 237