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Scoring respiratory events (Respiratory Disturbance Index (RDI)) unreliable
respevpr under Sleep Monitoring/Polysomnography/Signal Quality in CHAT variables
1=Problems with respiratory events (when due to the technical quality of the respiratory signals, distinctions between hypopneas and normal breaths are equivocal in over 20 % of scored events; also when the quality of the oximetry signal raises doubts about actual magnitude of desaturation linked with over 20 % of respiratory events (unstable baseline)
Total Number of Respiratory Events: All respiratory events with at least 50% flow reduction and without any oxygen desat threshold used during estimated sleep from type III home sleep apnea test
aphyp under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HEARTBEAT variables
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)Details about how the respiratory events were scored can be found in the Embletta scoring manual.
Total Number of Respiratory Events (Non-Supine): All respiratory events with at least 50% flow reduction and without any oxygen desat threshold used during estimated sleep in non-supine position from type III home sleep apnea test
aphypns under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HEARTBEAT variables
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)Details about how the respiratory events were scored can be found in the Embletta scoring manual.
Total Number of Respiratory Events (Supine): All respiratory events with at least 50% flow reduction and without any oxygen desat threshold used during estimated sleep in supine position from type III home sleep apnea test
aphyps under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HEARTBEAT variables
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)Details about how the respiratory events were scored can be found in the Embletta scoring manual.
Maximum duration of respiratory events: All respiratory events with at least 50% flow reduction and without any oxygen desat threshold used during estimate sleep duration from type III home sleep apnea test
maxevent under Sleep Monitoring/Polysomnography/Respiratory Event Length in HEARTBEAT variables
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)Details about how the respiratory events were scored can be found in the Embletta scoring manual.
Respiratory Event Index: (All respiratory events with at least 50% flow reduction and without any oxygen desaturation threshold used) / hours of estimated sleep from type III home sleep apnea test
aphypi under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
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) Details about how the respiratory events were scored can be found in the Embletta scoring manual. Please refer to :ahi_screening: from the baseline screening visit for a more standardized version of AHI in this study.
Respiratory Event Index (Non-Supine): (All respiratory events with at least 50% flow reduction and without any oxygen desaturation threshold used) / hours of estimated sleep in non-supine position from type III home sleep apnea test
aphypins under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
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) Details about how the respiratory events were scored can be found in the Embletta scoring manual. Please refer to :ahi_screening: from the baseline screening visit for a more standardized version of AHI in this study.
Respiratory Event Index (Supine): (All respiratory events with at least 50% flow reduction and without any oxygen desaturation threshold used) / hours of estimated sleep in supine position from type III home sleep apnea test
aphypis under Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices in HEARTBEAT variables
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) Details about how the respiratory events were scored can be found in the Embletta scoring manual. Please refer to :ahi_screening: from the baseline screening visit for a more standardized version of AHI in this study.
Average duration of all respiratory events with at least 50% flow reduction and without any oxygen desat threshold used during total estimated sleep duration from type III home sleep apnea test
durevent under Sleep Monitoring/Polysomnography/Respiratory Event Length in HEARTBEAT variables
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)Details about how the respiratory events were scored can be found in the Embletta scoring manual.
Total Number of Apnea and Hypopnea: Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used during artifact-free estimated sleep from type IV home sleep apnea test
slpa39 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Non-Supine): Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used during artifact-free estimated sleep in non-supine position from type IV home sleep apnea test
slpa40 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Supine): Apneas with no oxygen desaturation threshold used + hypopneas with > 50% flow reduction and no oxygen desaturation threshold used during artifact-free estimated sleep in supine position from type IV home sleep apnea test
slpa41 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas: Apneas with >= 1% oxygen desaturation + hypopneas with > 50% flow reduction and >= 1% oxygen desaturation during artifact-free estimated sleep from type IV home sleep apnea test
slpa48 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Non-Supine): Apneas with >= 1% oxygen desaturation + hypopneas with > 50% flow reduction and >= 1% oxygen desaturation during artifact-free estimated sleep in non-supine position from type IV home sleep apnea test
slpa49 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Supine): Apneas with >= 1% oxygen desaturation + hypopneas with > 50% flow reduction and >= 1% oxygen desaturation during artifact-free estimated sleep in supine position from type IV home sleep apnea test
slpa50 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas: Apneas with >= 3% oxygen desaturation + hypopneas with > 50% flow reduction and >= 3% oxygen desaturation during artifact-free estimated sleep from type IV home sleep apnea test
slpa57 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Non-Supine): Apneas with >= 3% oxygen desaturation + hypopneas with > 50% flow reduction and >= 3% oxygen desaturation during artifact-free estimated sleep in non-supine position from type IV home sleep apnea test
slpa58 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Supine): Apneas with >= 3% oxygen desaturation + hypopneas with > 50% flow reduction and >= 3% oxygen desaturation during artifact-free estimated sleep in supine position from type IV home sleep apnea test
slpa59 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas: Apneas with >= 4% oxygen desaturation + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation during artifact-free estimated sleep from type IV home sleep apnea test
slpa66 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Non-Supine): Apneas with >= 4% oxygen desaturation + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation during artifact-free estimated sleep in non-supine position from type IV home sleep apnea test
slpa67 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Total Number of Apneas and Hypopneas (Supine): Apneas with >= 4% oxygen desaturation + hypopneas with > 50% flow reduction and >= 4% oxygen desaturation during artifact-free estimated sleep in supine position from type IV home sleep apnea test
slpa68 under Sleep Monitoring/Polysomnography/Respiratory Event Counts in HCHS variables
Apnea and hypopnea events were not distinguished as separate event types during scoring. Both were classified as a respiratory event that required a 50% reduction in Nasal Flow signal for at least 10 seconds.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.
Overall instability (NREM)
lgn under Sleep Monitoring/Polysomnography/Quantitative Respiratory Analysis in MESA variables
The magnitude of reflex (opposing) ventilatory drive response to a change in ventilation; it describes the ventilatory control stability and includes the effect of circulatory delays. Ventilatory drive is the level of ventilation that would be observed at any moment if the respiratory mechanics were normal, i.e. intended ventilation.
Total number of limb movements with arousal and respiratory event from type I polysomnography
lmar under Sleep Monitoring/Polysomnography/Limb Movements in CFS variables
Total limb movements with arousal and respiratory events
Total number of limb movements with arousal and respiratory event in stage 3/4 sleep with arousal from type I polysomnography
lmardelta under Sleep Monitoring/Polysomnography/Limb Movements in CFS variables
Total limb movements with arousal and respiratory events in delta sleep
Total number of limb movements in NREM sleep with arousal and respiratory event from type I polysomnography
lmarnrem under Sleep Monitoring/Polysomnography/Limb Movements in CFS variables
Total limb movements with arousal and respiratory events in NREM sleep
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