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 >= 3% oxygen 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 + urbpa3 + uropa3 + unrbpa3 + unropa3) / slpprdp
Units
events per hour
Type
numeric
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 >= 3% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 5 732 10.9 ± 14.6 5.1 0.0 95.1 3 735
Participant's age (category) 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 or with arousal) / hour of sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 10.9 ± 14.4 5.1 0.0 95.1 3 658
5-14 yrs old 64 1.7 ± 3.9 0.6 0.0 26.2 - 64
15-24 yrs old 112 3.6 ± 5.3 1.9 0.0 37.9 - 112
25-34 yrs old 62 9.7 ± 16.0 3.9 0.2 95.1 - 62
35-44 years 97 14.0 ± 18.0 7.0 0.2 77.2 1 98
45-54 years 146 12.9 ± 14.4 7.5 0.2 88.8 2 148
55-64 years 84 13.5 ± 11.8 10.5 0.3 56.6 - 84
65-74 years 57 18.3 ± 16.4 12.4 0.7 59.7 - 57
75-84 years 31 18.3 ± 18.4 14.1 0.9 88.4 - 31
85 years or older 2 13.9 ± 3.6 13.9 11.4 16.4 - 2
Participant's sex 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 or with arousal) / hour of sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 10.9 ± 14.6 5.1 0.0 95.1 3 735
Female 403 8.9 ± 12.5 4.0 0.0 78.7 3 406
Male 329 13.3 ± 16.5 7.3 0.0 95.1 - 329
Participant's 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 >= 3% oxygen desaturation or with arousal) / hour of sleep from type I polysomnography
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 10.9 ± 14.6 5.1 0.0 95.1 3 735
White 302 10.9 ± 14.3 5.3 0.0 95.1 2 304
Black 408 11.3 ± 15.0 5.1 0.0 88.8 1 409
More than one race 22 4.3 ± 8.3 1.3 0.2 39.1 - 22