Name
ahi_o0h4a
Label
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Description

Calculated - Summary metric of sleep disordered breathing events.

Calculation
ahi_o0h4a = 60 * (hremba4 + hroa4 + hnrba4 + hnroa4 + urbpa4 + uropa4 + unrbpa4 + unropa4 + oarbp + oarop + oanbp + oanop ) / slpprdp
Units
number of events per hour
Type
numeric
MESA exam number vs Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,057 19.6 ± 17.3 14.3 0.0 104.1 180 2,237
Participant Age at MESA Sleep Visit vs Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 19.6 ± 17.3 14.3 0.0 104.1 180 2,237
54.0 to 62.0 years 525 17.2 ± 17.3 11.6 0.0 104.1 35 560
62.0 to 69.0 years 532 20.3 ± 18.6 14.5 0.1 97.5 27 559
69.0 to 77.0 years 510 19.8 ± 16.6 14.5 0.0 83.0 49 559
77.0 to 95.0 years 490 21.1 ± 16.5 16.9 0.4 89.7 69 559
Gender of the participant vs Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 19.6 ± 17.3 14.3 0.0 104.1 180 2,237
Female 1,103 15.5 ± 14.7 11.3 0.0 97.5 95 1,198
Male 954 24.3 ± 18.9 19.0 0.3 104.1 85 1,039
Race/ethnicity of the participant vs Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 19.6 ± 17.3 14.3 0.0 104.1 180 2,237
White, Caucasian 743 18.6 ± 16.7 13.4 0.0 97.5 87 830
Chinese American 250 20.4 ± 16.9 15.7 0.0 84.3 15 265
Black, African-American 573 18.7 ± 18.0 13.1 0.1 104.1 43 616
Hispanic 491 21.6 ± 17.6 16.4 0.0 91.5 35 526