ahi_a0h3a ahi_a0h4a
Name
ahi_a0h4
Label
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.].

Search for all AHI variables consistent with the same clinical guidelines within this dataset

Calculation
ahi_a0h4 = 60 * (hrembp4 + hrop4 + hnrbp4 + hnrop4 + carbp + carop + canbp + canop + oarbp + oarop + oanbp + oanop) / slpprdp
Units
events per hour
Type
numeric
Tags
aasm15_acceptable ahi_ap0uhp3x4u_f1t2
Sleep Heart Health Study (SHHS) Visit Number vs Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 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 5,804 10.2 ± 13.6 5.2 0.0 154.3 - 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 11.7 ± 14.1 6.8 0.0 116.0 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 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 5,804 10.2 ± 13.6 5.2 0.0 154.3 - 5,804
35-44 years 342 6.8 ± 12.4 2.5 0.0 93.6 - 342
45-54 years 1,017 7.8 ± 13.0 3.2 0.0 119.5 - 1,017
55-64 years 1,769 10.0 ± 13.6 4.8 0.0 99.8 - 1,769
65-74 years 1,617 11.3 ± 13.9 6.7 0.0 154.3 - 1,617
75-84 years 955 12.0 ± 13.5 7.4 0.0 92.6 - 955
85 years or older 104 14.6 ± 14.9 9.3 0.0 75.2 - 104
Gender of the participant vs Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 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 5,804 10.2 ± 13.6 5.2 0.0 154.3 - 5,804
Male 2,765 13.3 ± 15.3 8.1 0.0 119.5 - 2,765
Female 3,039 7.3 ± 11.2 3.4 0.0 154.3 - 3,039
Gender of the participant vs Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 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 11.7 ± 14.1 6.8 0.0 116.0 1,429 4,080
Male 1,226 14.9 ± 15.7 9.5 0.0 116.0 635 1,861
Female 1,425 9.0 ± 11.8 5.1 0.0 96.5 794 2,219
Race of the participant vs Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 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 5,804 10.2 ± 13.6 5.2 0.0 154.3 - 5,804
White 4,907 10.3 ± 13.6 5.3 0.0 154.3 - 4,907
Black 515 10.7 ± 15.1 5.0 0.0 112.7 - 515
Other 382 8.4 ± 11.9 3.7 0.0 79.4 - 382
Race of the participant vs Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 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 11.7 ± 14.1 6.8 0.0 116.0 1,429 4,080
White 2,311 11.8 ± 14.1 6.9 0.0 116.0 1,276 3,587
Black 181 11.9 ± 14.1 6.5 0.0 74.6 75 256
Other 159 9.8 ± 13.1 5.8 0.0 89.8 78 237