index_time ahi_d
Name
ahi
Label
Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
Description

Composite AHI based on the diagnostic sleep study and home sleep study.

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

Units
events per hour
Type
numeric
Tags
aasm15_acceptable ahi_ap0nhp3x4n_f1t3 ahi_ap0uhp3x4u_f1t1
Visit number vs Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
N Mean StdDev Median Min Max Unknown Total
Baseline Visit 343 27.1 ± 27.7 17.1 0.0 117.6 30 373
Month 1 Follow-up Visit - - - - - - - -
Month 3 Follow-up Visit - - - - - - - -
Treatment arm vs Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
Baseline Visit
N Mean StdDev Median Min Max Unknown Total
Total 343 27.1 ± 27.7 17.1 0.0 117.6 30 373
Lab 168 28.6 ± 29.7 16.1 0.0 117.6 18 186
Home 175 25.6 ± 25.5 18.3 0.0 113.1 12 187
Age at baseline visit vs Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
Baseline Visit
N Mean StdDev Median Min Max Unknown Total
Total 343 27.1 ± 27.7 17.1 0.0 117.6 30 373
20.0 to 37.0 years 85 24.4 ± 29.5 10.7 0.0 117.6 9 94
37.0 to 46.0 years 85 25.1 ± 28.1 15.2 0.0 105.5 8 93
46.0 to 55.0 years 84 26.4 ± 24.3 18.7 0.3 98.3 9 93
55.0 to 80.0 years 89 32.1 ± 28.2 23.5 0.2 113.1 4 93
Gender vs Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
Baseline Visit
N Mean StdDev Median Min Max Unknown Total
Total 343 27.1 ± 27.7 17.1 0.0 117.6 30 373
Female 137 21.6 ± 23.8 14.9 0.0 117.6 11 148
Male 206 30.7 ± 29.4 20.5 0.0 105.5 19 225
Race vs Apnea-Hypopnea Index (AHI): (All apneas with no oxygen desaturation threshold used + hypopneas with > 30% flow reduction and with >= 4% oxygen desaturation ) / hour of sleep from type I polysomnography or type III home sleep test
Baseline Visit
N Mean StdDev Median Min Max Unknown Total
Total 334 27.0 ± 27.8 17.0 0.0 117.6 30 364
white 245 27.2 ± 28.6 16.3 0.0 117.6 14 259
american indian or alaska native - - - - - - - -
black or african american 73 25.6 ± 25.4 17.1 0.3 105.5 15 88
asian 4 29.1 ± 20.1 33.6 3.2 45.9 - 4
native hawaiian or other pacific islander 1 71.2 - 71.2 71.2 71.2 - 1
other 3 13.7 ± 9.9 18.8 2.3 20.0 1 4
multiple 8 31.5 ± 28.7 22.2 1.9 72.9 - 8