Name
nsrr_ahi_hp4u_aasm15
Label
Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep
Description

Harmonized by the NSRR team.

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.].

Refer to the source for detailed definition for respiratory events: ahi

Units
events per hour
Type
numeric
Study visit number vs Apnea-Hypopnea Index : (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep
N Mean StdDev Median Min Max Unknown Total
Visit 1 1,123 11.5 ± 15.2 5.7 0.0 112.7 - 1,123
Visit 2 758 13.0 ± 15.4 7.6 0.0 101.2 - 758
Visit 3 566 12.0 ± 15.0 6.4 0.0 86.9 - 566
Visit 4 121 12.5 ± 13.8 7.6 0.0 61.5 - 121
Visit 5 2 8.4 ± 2.0 8.4 6.9 9.8 - 2
Incident Outcomes Tracking - - - - - - - -