Name
slpa36
Label
Respiratory Event Index: (Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used) / hours of artifact-free estimated sleep from type IV home sleep apnea test
Description

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) Any continuous periods of >=20 min with loss of respiratory channel was marked as wake and not included in the estimates. Please refer to slpa30 for the valid estimated sleep duration used to calculate this index.

Units
events per hour
Type
numeric
Visit Number vs Respiratory Event Index: (Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used) / hours of artifact-free estimated sleep from type IV home sleep apnea test
N Mean StdDev Median Min Max Unknown Total
Baseline 12,442 19.2 ± 19.1 13.1 0.0 157.8 3,973 16,415
Sueño Ancillary - - - - - - - -
Gender vs Respiratory Event Index: (Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used) / hours of artifact-free estimated sleep from type IV home sleep apnea test
Baseline
N Mean StdDev Median Min Max Unknown Total
Total 12,442 19.2 ± 19.1 13.1 0.0 157.8 1,713 14,155
Female 7,370 16.2 ± 17.1 10.8 0.0 139.8 988 8,358
Male 5,072 23.4 ± 21.0 16.9 0.0 157.8 725 5,797