Related Variables
| nsrr_ttldursp_f1 |
Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from polysomnography
Conventionally, this would be called total sleep time (TST) (i.e. total time spent in stage 1 or greater). |
Harmonized/Polysomnography/Sleep Architecture | |
| ahi_a0h3 |
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_a0h3a |
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.] |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_a0h4 |
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_a0h4a |
Apnea-Hypopnea Index: (Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_c0h3 |
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_c0h3a |
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.] |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_c0h4 |
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_c0h4a |
Central Apnea-Hypopnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_o0h3 |
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_o0h3a |
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.] |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_o0h4 |
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_o0h4a |
Obstructive Apnea-Hypopnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events. |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| cai0p |
Central Apnea Index: (Central apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| cai4p |
Central Apnea Index: (Central apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| cai4pa |
Central Apnea Index: (Central apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| oai0p | Obstructive Apnea Index: (Obstructive apneas with no oxygen desaturation threshold used and with or without arousal) / hour of sleep from type II polysomnography | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| oai4p | Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation and with or without arousal) / hour of sleep from type II polysomnography | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| oai4pa | Obstructive Apnea Index: (Obstructive apneas with >= 4% oxygen desaturation or with arousal) / hour of sleep from type II polysomnography | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi0p |
Apnea-Hypopnea Index: Apneas with no oxygen desaturation threshold used and with or without arousal+ hypopneas with > 30% flow reduction and with no oxygen desaturation used and with or without arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi0pa |
Apnea-Hypopnea Index: Apneas with no oxygen desaturation threshold used and only with arousal+ hypopneas with > 30% flow reduction and with no oxygen desaturation used and only with arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi2p |
Apnea-Hypopnea Index: Apneas with >=2% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and >=2% oxygen desaturation and with or without arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi2pa |
Apnea-Hypopnea Index: Apneas with >=2% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=2% oxygen desaturation or with arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi3p |
Apnea-Hypopnea Index: Apneas with >=3% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and >=3% oxygen desaturation and with or without arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi3pa |
Apnea-Hypopnea Index: Apneas with >=3% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=3% oxygen desaturation or with arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi4p |
Apnea-Hypopnea Index: Apneas with >=4% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and >=4% oxygen desaturation and with or without arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi4pa |
Apnea-Hypopnea Index: Apneas with >=4% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=4% oxygen desaturation or with arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi5p |
Apnea-Hypopnea Index: Apneas with >=5% oxygen desaturation and with or without arousal+ hypopneas with > 30% flow reduction and >=5% oxygen desaturation and with or without arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi5pa |
Apnea-Hypopnea Index: Apneas with >=5% oxygen desaturation or with arousal+ hypopneas with > 30% flow reduction and >=5% oxygen desaturation or with arousal / hour of sleep from type II polysomnography
Calculated - Summary metric of sleep disordered breathing events |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ai_all |
Arousal Index: Number of arousals per hour of sleep from type II polysomnography
Total number of arousals per hour of sleep. Ratio of count of arousals to total sleep time in hours. |
Sleep Monitoring/Polysomnography/Arousals | |
| ai_nrem |
Arousal Index (NREM): Number of arousals per hour of NREM sleep from type II polysomnography
Total arousals in non-rapid eye movement sleep (NREM) per hours of non-rapid eye movement sleep (NREM) |
Sleep Monitoring/Polysomnography/Arousals | |
| slp_eff |
Sleep Efficiency: the ratio of sleep duration (i.e. total sleep time) to in-bed period from type II polysomnography
Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB). |
Sleep Monitoring/Polysomnography/Sleep Architecture |