ahi_ap0nhp3x4n_f1t3 oahi_oa0nhp3x3n_f1t3
Name
ahi_ap0nhp3x5x4nhp5x3n_f1t3
Label
Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used, hypopneas with 30%-50% flow reduction and with >= 4% oxygen desaturation, and hypopneas with > 50% flow reduction with >= 3% oxygen desaturation) / hour of estimated sleep from type III home sleep apnea test
Description

Calculated - Summary metric of sleep disordered breathing events.

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

Units
events per hour
Type
numeric
Tags
ahi_a0t4f3 ahi_ap0uhp3x5x4uhp5x3u ahi_ap0uhp3x5x4uhp5x3u_f1t3
A4b. Visit of Sleep Study vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used, hypopneas with 30%-50% flow reduction and with >= 4% oxygen desaturation, and hypopneas with > 50% flow reduction with >= 3% oxygen desaturation) / hour of estimated sleep from type III home sleep apnea test
N Mean StdDev Median Min Max Unknown Total
Visit 1 3,012 0.6 ± 1.6 0.2 0.0 35.7 - 3,012
Visit 3 2,332 1.2 ± 4.0 0.3 0.0 147.4 - 2,332
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used, hypopneas with 30%-50% flow reduction and with >= 4% oxygen desaturation, and hypopneas with > 50% flow reduction with >= 3% oxygen desaturation) / hour of estimated sleep from type III home sleep apnea test
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 3,012 0.6 ± 1.6 0.2 0.0 35.7 - 3,012
Non-Hispanic White 1,842 0.6 ± 1.5 0.2 0.0 29.1 - 1,842
Non-Hispanic Black 359 0.9 ± 2.9 0.2 0.0 35.7 - 359
Hispanic 557 0.5 ± 1.1 0.1 0.0 10.4 - 557
Asian 112 0.7 ± 1.4 0.2 0.0 8.4 - 112
Other 142 0.5 ± 1.2 0.2 0.0 8.7 - 142
Race/ethnicity combined categories derived from V1AF05 and V1AF07a-g vs Apnea-Hypopnea Index: (All apneas with no oxygen desaturation threshold used, hypopneas with 30%-50% flow reduction and with >= 4% oxygen desaturation, and hypopneas with > 50% flow reduction with >= 3% oxygen desaturation) / hour of estimated sleep from type III home sleep apnea test
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 2,332 1.2 ± 4.0 0.3 0.0 147.4 - 2,332
Non-Hispanic White 1,494 1.2 ± 4.7 0.3 0.0 147.4 - 1,494
Non-Hispanic Black 247 1.5 ± 3.1 0.5 0.0 20.3 - 247
Hispanic 397 0.9 ± 2.0 0.3 0.0 15.9 - 397
Asian 84 1.4 ± 2.1 0.4 0.0 11.2 - 84
Other 110 1.3 ± 2.2 0.4 0.0 13.2 - 110