ahi_c0h3 ahi_c0h4
Name
ahi_c0h3a
Label
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep from type I polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events. The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [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_c0h3a = 60 * (hremba3 + hroa3 + hnrba3 + hnroa3 + carbp + carop + canbp + canop) / slpprdp
Units
number of events per hour
Type
numeric
Tags
aasm15_recommended cahi_ca0uhp3x3r_f1t1
Visit vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Peds - - - - - - - -
Teenz - - - - - - - -
TREC 515 1.6 ± 4.3 0.7 0.0 82.8 2 517
Age at time of visit vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 1.6 ± 4.3 0.7 0.0 82.8 2 517
16.14 to 17.41 years 130 1.3 ± 1.9 0.8 0.0 14.0 - 130
17.41 to 17.69 years 128 1.1 ± 1.6 0.6 0.0 13.8 1 129
17.69 to 17.91 years 129 2.4 ± 7.8 0.8 0.0 82.8 - 129
17.91 to 19.56 years 128 1.7 ± 2.1 0.9 0.0 15.8 1 129
Male gender vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 1.6 ± 4.3 0.7 0.0 82.8 2 517
No 255 0.8 ± 1.3 0.5 0.0 15.8 1 256
Yes 260 2.4 ± 5.8 1.2 0.0 82.8 1 261
Race vs Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal + hypopneas with > 30% flow reduction and with > 3% desaturation or with arousal) / hour of sleep from type I polysomnography
TREC
N Mean StdDev Median Min Max Unknown Total
Total 515 1.6 ± 4.3 0.7 0.0 82.8 2 517
White 307 1.8 ± 5.1 0.8 0.0 82.8 2 309
Black 185 1.4 ± 2.6 0.6 0.0 25.4 - 185
Other 23 1.4 ± 1.7 0.8 0.0 6.1 - 23