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 >= 3% oxygen desaturation or with arousal) / hour of sleep from type II 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
events per hour
Type
numeric
Tags
aasm15_recommended cahi_ca0uhp3x3r_f1t2
Sleep Heart Health Study (SHHS) Visit Number 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 II polysomnography
N Mean StdDev Median Min Max Unknown Total
Visit 1 5,804 14.0 ± 11.4 11.0 0.0 101.7 - 5,804
Interim Follow-up Visit - - - - - - - -
Visit 2 2,651 14.6 ± 12.0 11.4 0.0 101.2 1,429 4,080
CVD Outcomes - - - - - - - -
Age at Sleep Heart Health Study Visit One (SHHS1) 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 II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,804 14.0 ± 11.4 11.0 0.0 101.7 - 5,804
35-44 years 342 10.3 ± 10.2 7.2 0.2 57.8 - 342
45-54 years 1,017 11.9 ± 10.8 8.9 0.0 87.8 - 1,017
55-64 years 1,769 14.1 ± 11.6 10.9 0.0 73.3 - 1,769
65-74 years 1,617 15.3 ± 11.9 12.5 0.2 101.7 - 1,617
75-84 years 955 15.0 ± 10.6 12.3 0.0 64.9 - 955
85 years or older 104 14.6 ± 10.5 11.4 0.0 58.8 - 104
Gender of the participant 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 II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,804 14.0 ± 11.4 11.0 0.0 101.7 - 5,804
Male 2,765 17.0 ± 11.8 14.6 0.0 87.8 - 2,765
Female 3,039 11.2 ± 10.2 8.5 0.0 101.7 - 3,039
Gender of the participant 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 II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 14.6 ± 12.0 11.4 0.0 101.2 1,429 4,080
Male 1,226 17.9 ± 12.5 14.9 0.1 85.2 635 1,861
Female 1,425 11.8 ± 10.9 9.0 0.0 101.2 794 2,219
Race of the participant 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 II polysomnography
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 5,804 14.0 ± 11.4 11.0 0.0 101.7 - 5,804
White 4,907 14.3 ± 11.5 11.3 0.0 101.7 - 4,907
Black 515 12.8 ± 11.2 9.9 0.0 73.3 - 515
Other 382 11.8 ± 9.7 9.0 0.2 53.0 - 382
Race of the participant 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 II polysomnography
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 2,651 14.6 ± 12.0 11.4 0.0 101.2 1,429 4,080
White 2,311 14.8 ± 12.1 11.6 0.0 101.2 1,276 3,587
Black 181 13.5 ± 11.7 9.7 0.0 58.3 75 256
Other 159 13.0 ± 11.7 10.5 0.0 72.9 78 237