Name

ahi_a0h4a

Label

Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep

Calculation
ahi_a0h4a = 60 * (hremba4 + hroa4 + hnrba4 + hnroa4 + urbpa4 + uropa4 + unrbpa4 + unropa4 + carbp + carop + canbp + canop + oarbp + oarop + oanbp + oanop ) / slpprdp
Units
events per hour
Type
numeric
MESA Exam Number vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,057 20.1 ± 17.7 14.6 0.0 104.2 180 2,237
Participant Age at MESA Sleep Visit vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 20.1 ± 17.7 14.6 0.0 104.2 180 2,237
54.0 to 62.0 years 520 17.6 ± 17.8 11.7 0.0 104.2 40 560
62.0 to 69.0 years 536 20.9 ± 18.9 14.8 0.1 97.5 23 559
69.0 to 77.0 years 511 20.3 ± 16.9 14.8 0.3 83.6 48 559
77.0 to 95.0 years 490 21.5 ± 17.1 17.0 0.0 101.7 69 559
Gender vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 20.1 ± 17.7 14.6 0.0 104.2 180 2,237
Female 1,103 15.7 ± 14.8 11.4 0.0 97.5 95 1,198
Male 954 25.2 ± 19.5 19.6 0.3 104.2 85 1,039
Race/ethnicity vs Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 20.1 ± 17.7 14.6 0.0 104.2 180 2,237
White, Caucasian 743 19.2 ± 17.0 13.7 0.0 97.5 87 830
Chinese American 250 20.9 ± 17.4 15.9 0.0 84.3 15 265
Black, African-American 573 19.2 ± 18.4 13.2 0.1 104.2 43 616
Hispanic 491 22.1 ± 18.1 16.9 0.0 101.7 35 526