ahi_a0h3a ahi_a0h4a
Name
ahi_a0h4
Label
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I 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_f1t1
Visit vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Peds - - - - - - - -
Teenz - - - - - - - -
TREC 515 0.9 ± 4.2 0.4 0.0 90.6 2 517
Age at time of visit vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 0.9 ± 4.2 0.4 0.0 90.6 2 517
16.14 to 17.41 years 130 0.6 ± 1.2 0.4 0.0 10.0 - 130
17.41 to 17.69 years 128 0.6 ± 1.1 0.3 0.0 10.9 1 129
17.69 to 17.91 years 129 1.6 ± 8.0 0.4 0.0 90.6 - 129
17.91 to 19.56 years 128 0.8 ± 1.6 0.4 0.0 11.7 1 129
Male gender vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 0.9 ± 4.2 0.4 0.0 90.6 2 517
No 255 0.5 ± 0.9 0.3 0.0 11.4 1 256
Yes 260 1.3 ± 5.8 0.5 0.0 90.6 1 261
Race vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 0.9 ± 4.2 0.4 0.0 90.6 2 517
White 307 1.1 ± 5.3 0.4 0.0 90.6 2 309
Black 185 0.7 ± 1.1 0.3 0.0 11.1 - 185
Other 23 0.8 ± 1.6 0.3 0.0 7.6 - 23