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 + carbp + carop + canbp + canop + urbp4 + urop4 + unrbp4 + unrop4) / slpprdp
Units
events per hour
Type
numeric
Visit 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
Visit 5 732 6.7 ± 11.9 1.9 0.0 91.8 3 735
Age at time of visit vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 655 6.6 ± 11.7 1.9 0.0 91.3 3 658
5-14 yrs old 64 1.2 ± 2.9 0.5 0.0 20.7 - 64
15-24 yrs old 112 1.5 ± 3.5 0.6 0.0 28.8 - 112
25-34 yrs old 62 6.0 ± 13.6 1.5 0.0 91.3 - 62
35-44 years 97 9.1 ± 15.8 2.9 0.0 77.4 1 98
45-54 years 146 8.1 ± 12.2 3.2 0.0 87.5 2 148
55-64 years 84 7.7 ± 9.1 4.8 0.0 49.7 - 84
65-74 years 57 11.0 ± 12.6 6.3 0.0 52.4 - 57
75-84 years 31 11.0 ± 13.2 7.5 0.0 63.2 - 31
85 years or older 2 26.8 ± 32.9 26.8 3.6 50.0 - 2
Sex vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 6.7 ± 11.9 1.9 0.0 91.8 3 735
Female 403 4.9 ± 9.2 1.2 0.0 71.6 3 406
Male 329 8.8 ± 14.2 3.0 0.0 91.8 - 329
Race vs Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 732 6.7 ± 11.9 1.9 0.0 91.8 3 735
White 302 6.8 ± 12.4 1.8 0.0 91.8 2 304
Black 408 6.8 ± 11.6 2.0 0.0 87.5 1 409
Other 22 2.4 ± 6.6 0.5 0.1 31.3 - 22