Name
hi_hp5x0u
Label
Hypopnea Index: (Hypopneas with > 50% flow reduction and no oxygen desaturation threshold used and with or without arousal) / hour of sleep
Description

Calculated - Summary metric of sleep disordered breathing events. Hypopneas are defined based on American Academy of Sleep Medicine (AASM) Chicago 1999 standard. Sleep 1999 (PubMed ID:10450601) Search for all AHI variables consistent with the same clinical guidelines within this dataset

Units
events per hour
Type
numeric
A4b. Visit of Sleep Study vs Hypopnea Index: (Hypopneas with > 50% flow reduction and no oxygen desaturation threshold used and with or without arousal) / hour of sleep
N Mean StdDev Median Min Max Unknown Total
Visit 1 3,012 1.5 ± 2.1 0.9 0.0 26.9 - 3,012
Visit 3 2,332 1.8 ± 2.9 0.9 0.0 46.3 - 2,332
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs Hypopnea Index: (Hypopneas with > 50% flow reduction and no oxygen desaturation threshold used and with or without arousal) / hour of sleep
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,012 1.5 ± 2.1 0.9 0.0 26.9 - 3,012
Non-Hispanic White 1,842 1.6 ± 2.1 0.9 0.0 24.7 - 1,842
Non-Hispanic Black 359 1.6 ± 2.7 0.7 0.0 26.9 - 359
Hispanic 557 1.4 ± 2.0 0.8 0.0 20.8 - 557
Asian 112 1.6 ± 1.9 1.0 0.0 10.5 - 112
Other 142 1.2 ± 1.6 0.7 0.0 10.3 - 142
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs Hypopnea Index: (Hypopneas with > 50% flow reduction and no oxygen desaturation threshold used and with or without arousal) / hour of sleep
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 2,332 1.8 ± 2.9 0.9 0.0 46.3 - 2,332
Non-Hispanic White 1,494 1.9 ± 3.2 0.9 0.0 46.3 - 1,494
Non-Hispanic Black 247 1.8 ± 2.7 0.8 0.0 18.3 - 247
Hispanic 397 1.5 ± 2.2 0.8 0.0 17.3 - 397
Asian 84 2.2 ± 2.3 1.3 0.0 11.3 - 84
Other 110 1.8 ± 2.3 0.9 0.0 15.1 - 110