Name

ahi_c0h4

Label

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

Calculation
ahi_c0h4 = 60 * (hrembp4 + hrop4 + hnrbp4 + hnrop4 + urbp4 + urop4 + unrbp4 + unrop4 + carbp + carop + canbp + canop ) / slpprdp
Units
events per hour
Type
numeric
MESA Exam Number vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
N Mean StdDev Median Min Max Unknown Total
Exam 5 2,057 10.8 ± 12.5 6.5 0.0 90.5 180 2,237
Participant Age at MESA Sleep Visit vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 10.8 ± 12.5 6.5 0.0 90.5 180 2,237
54.0 to 62.0 years 520 10.2 ± 13.1 5.3 0.0 90.3 40 560
62.0 to 69.0 years 536 11.2 ± 12.5 7.2 0.0 76.8 23 559
69.0 to 77.0 years 511 11.1 ± 12.4 6.7 0.0 74.0 48 559
77.0 to 95.0 years 490 10.8 ± 11.7 6.8 0.0 90.5 69 559
Gender vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 10.8 ± 12.5 6.5 0.0 90.5 180 2,237
Female 1,103 8.7 ± 11.3 4.7 0.0 90.3 95 1,198
Male 954 13.3 ± 13.3 9.4 0.0 90.5 85 1,039
Race/ethnicity vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Exam 5
N Mean StdDev Median Min Max Unknown Total
Total 2,057 10.8 ± 12.5 6.5 0.0 90.5 180 2,237
White, Caucasian 743 10.1 ± 12.0 5.8 0.0 76.8 87 830
Chinese American 250 10.6 ± 11.8 7.0 0.0 60.9 15 265
Black, African-American 573 10.6 ± 12.9 5.9 0.0 90.3 43 616
Hispanic 491 12.3 ± 12.9 8.2 0.0 90.5 35 526