ahi_o0h3a ahi_o0h4a
Name
ahi_o0h4
Label
Obstructive Apnea-Hypopnea Index: (Obstructive 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_o0h4 = 60 * (hrembp4 + hrop4 + hnrbp4 + hnrop4 + oarbp + oarop + oanbp + oanop) / slpprdp
Units
events per hour
Type
numeric
Tags
aasm15_acceptable oahi_oa0uhp3x4u_f1t2
Sleep Heart Health Study (SHHS) Visit Number vs Obstructive Apnea-Hypopnea Index: (Obstructive 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 9.7 ± 13.0 5.0 0.0 154.3 - 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 10.9 ± 13.1 6.5 0.0 115.6 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) vs Obstructive Apnea-Hypopnea Index: (Obstructive 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 9.7 ± 13.0 5.0 0.0 154.3 - 5,804
35-44 years 342 6.4 ± 11.8 2.4 0.0 91.8 - 342
45-54 years 1,017 7.5 ± 12.7 3.0 0.0 114.9 - 1,017
55-64 years 1,769 9.5 ± 13.0 4.6 0.0 93.7 - 1,769
65-74 years 1,617 10.7 ± 13.2 6.4 0.0 154.3 - 1,617
75-84 years 955 11.1 ± 12.4 7.1 0.0 92.4 - 955
85 years or older 104 14.3 ± 14.5 9.3 0.0 74.9 - 104
Gender of the participant vs Obstructive Apnea-Hypopnea Index: (Obstructive 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 9.7 ± 13.0 5.0 0.0 154.3 - 5,804
Male 2,765 12.5 ± 14.4 7.8 0.0 115.8 - 2,765
Female 3,039 7.1 ± 10.9 3.3 0.0 154.3 - 3,039
Gender of the participant vs Obstructive Apnea-Hypopnea Index: (Obstructive 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 10.9 ± 13.1 6.5 0.0 115.6 1,429 4,080
Male 1,226 13.6 ± 14.5 8.7 0.0 115.6 635 1,861
Female 1,425 8.6 ± 11.2 4.9 0.0 96.4 794 2,219
Race of the participant vs Obstructive Apnea-Hypopnea Index: (Obstructive 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 9.7 ± 13.0 5.0 0.0 154.3 - 5,804
White 4,907 9.7 ± 12.9 5.1 0.0 154.3 - 4,907
Black 515 10.3 ± 14.8 4.5 0.0 112.7 - 515
Other 382 8.2 ± 11.6 3.6 0.0 79.4 - 382
Race of the participant vs Obstructive Apnea-Hypopnea Index: (Obstructive 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 10.9 ± 13.1 6.5 0.0 115.6 1,429 4,080
White 2,311 11.0 ± 13.1 6.6 0.0 115.6 1,276 3,587
Black 181 11.1 ± 12.9 6.1 0.0 70.0 75 256
Other 159 9.4 ± 12.7 5.7 0.0 89.8 78 237