Name
slpa38
Label
Respiratory Event Index (Supine): (Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used) / hours of artifact-free estimated sleep in supine position 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 slpa34 for the valid estimated sleep duration used to calculate this index.
Units
events per hour
Type
numeric