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Childhood Adenotonsillectomy Trial

Name Label Folder
epworthscore_adult
Total score for adult Epworth Sleepiness Scale (ESS)
Total score for adult Epworth Sleepiness Scale (ESS)

The sum of items 1-8.

Sleep/Modified Epworth Sleepiness Scale (ESS)
epworthscore_modified
Total score for modified Epworth Sleepiness Scale (ESS)
Total score for modified Epworth Sleepiness Scale (ESS)

The sum of items 1-10.

Sleep/Modified Epworth Sleepiness Scale (ESS)
eliginelig
Eligibility status by Polysomnography (PSG)
Eligibility status by Polysomnography (PSG)

Ineligible if omahi3 <2 and omai0p<1 or meets any of urgent criteria variables ahiov30=1, saO2lt90=1, unuhrou=1,unuhroth=1

Sleep/Polysomnography (PSG)/Administrative
oxitype
Oximeter type
Oximeter type

1 = Masimo, 2 = Nonin, 3 = Nonin Biologic

Sleep/Polysomnography (PSG)/Administrative
stdydt
Date of study
Date of study Sleep/Polysomnography (PSG)/Administrative
unittype
Polysomnography (PSG) unit type
Polysomnography (PSG) unit type Sleep/Polysomnography (PSG)/Administrative
ai
Arousal Index - Compumedics calculated - changed with new American Academy of Sleep Medicine (AASM) rules now have two other variables
Arousal Index - Compumedics calculated - changed with new American Academy of Sleep Medicine (AASM) rules now have two other variables

(Total number of arousals) / (hours of sleep) New Variable @632 for Prof 3.1 build 239 Number of Arousals per hour during Report Time Options: 0 - All (default); 1 - Type 1 Arousal; 2 - Type 2 Arousal; 3 - Type 3 Arousal; 4 - Type 4 Arousal; 5 - Type 5 Arousal - See Arousal Sheet with new application of American Academy of Sleep Medicine (AASM) rules

Sleep/Polysomnography (PSG)/Arousals
ai_all
Overall Arousal Index
Overall Arousal Index

Arousal Index - total arousals per hour of sleep [(Total number of arousals) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Arousals
ai_nrem
Arousal Index non-rapid eye movement sleep (NREM)
Arousal Index non-rapid eye movement sleep (NREM)

Non-rapid eye movement sleep (NREM) Arousal Index - total arousals in non-rapid eye movement sleep (NREM) per hours of non-rapid eye movement sleep (NREM) [(Total number of arousals in non-rapid eye movement sleep (NREM)) / (hours of non-rapid eye movement sleep (NREM))]

Sleep/Polysomnography (PSG)/Arousals
ai_rem
Arousal Index rapid eye movement sleep (REM)
Arousal Index rapid eye movement sleep (REM)

Rapid eye movement sleep (REM) Arousal Index - total arousals in rapid eye movement sleep (REM) per hours of rapid eye movement sleep (REM) (Total number of arousals in rapid eye movement sleep (REM)) / (hours of rapid eye movement sleep (REM))

Sleep/Polysomnography (PSG)/Arousals
capnotype
Capnograph type
Capnograph type Sleep/Polysomnography (PSG)/Capnography
co2dur
Hours of usable carbon dioxide (CO2)
Hours of usable carbon dioxide (CO2)

Hours of usable carbon dioxide (CO2) signal - requires use of calibrated channel type with upper and lower limits for valid signal

Sleep/Polysomnography (PSG)/Capnography
nova_est_co2avgnr
Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM) (normalized for capnograph type)
Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM) (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
nova_est_co2avgr
Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM) (normalized for capnograph type)
Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM) (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
nova_est_co2blslp
Baseline end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type)
Baseline end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
nova_est_co2blwake
Baseline end-tidal carbon dioxide (ETCO2) awake (normalized for capnograph type)
Baseline end-tidal carbon dioxide (ETCO2) awake (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
nova_est_co2peak
Peak end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type)
Peak end-tidal carbon dioxide (ETCO2) asleep (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
nova_est_pctco2g45
Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg) (normalized for capnograph type)
Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg) (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
nova_est_pctco2g50
Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg) (normalized for capnograph type)
Percentage Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg) (normalized for capnograph type) Sleep/Polysomnography (PSG)/Capnography
rco2avgnr
Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM)
Average end-tidal carbon dioxide (ETCO2) in non-rapid eye movement sleep (NREM) Sleep/Polysomnography (PSG)/Capnography
rco2avgr
Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM)
Average end-tidal carbon dioxide (ETCO2) in rapid eye movement sleep (REM) Sleep/Polysomnography (PSG)/Capnography
rco2blslp
Baseline end-tidal carbon dioxide (ETCO2) asleep
Baseline end-tidal carbon dioxide (ETCO2) asleep Sleep/Polysomnography (PSG)/Capnography
rco2blwake
Baseline end-tidal carbon dioxide (ETCO2) awake
Baseline end-tidal carbon dioxide (ETCO2) awake Sleep/Polysomnography (PSG)/Capnography
rco2peak
Peak end-tidal carbon dioxide (ETCO2) asleep
Peak end-tidal carbon dioxide (ETCO2) asleep Sleep/Polysomnography (PSG)/Capnography
rpctco2g45
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg)
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 45 millimeters (mm) mercury (Hg) Sleep/Polysomnography (PSG)/Capnography
rpctco2g50
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg)
Percentage of Total Sleep Time (TST) where end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg) Sleep/Polysomnography (PSG)/Capnography
bpmavg
Average heart rate
Average heart rate

entire recording

Sleep/Polysomnography (PSG)/Heart Rate (HR)
bpmmax
Highest heart rate
Highest heart rate

entire recording

Sleep/Polysomnography (PSG)/Heart Rate (HR)
bpmmin
Lowest heart rate
Lowest heart rate

entire recording

Sleep/Polysomnography (PSG)/Heart Rate (HR)
avsao2nh
Average oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM)
Average oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
avsao2rh
Average oxygen saturation (SaO2) during rapid eye movement sleep (REM)
Average oxygen saturation (SaO2) during rapid eye movement sleep (REM) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
mnsao2nh
Minimum oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM)
Minimum oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
mnsao2rh
Minimum oxygen saturation (SaO2) during rapid eye movement sleep (REM)
Minimum oxygen saturation (SaO2) during rapid eye movement sleep (REM) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
mxsao2nh
Maximum oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM)
Maximum oxygen saturation (SaO2) during non-rapid eye movement sleep (NREM) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
mxsao2rh
Maximum oxygen saturation (SaO2) during rapid eye movement sleep (REM)
Maximum oxygen saturation (SaO2) during rapid eye movement sleep (REM) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
ndes2ph
Number of desaturations with >=2% desaturation
Number of desaturations with >=2% desaturation Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
ndes3ph
Number of desaturation with >=3% desaturation
Number of desaturation with >=3% desaturation Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
ndes4ph
Number of desaturation with >=4% desaturation
Number of desaturation with >=4% desaturation Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
ndes5ph
Number of desaturation with >=5% desaturation
Number of desaturation with >=5% desaturation Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
odi
Oxygen Desaturation Index >=3%
Oxygen Desaturation Index >=3% Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
odi3
Oxygen Desaturation Index at >=3% (during sleep time)
Oxygen Desaturation Index at >=3% (during sleep time) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
odi4
Oxygen Desaturation Index at >=4% (during sleep time)
Oxygen Desaturation Index at >=4% (during sleep time) Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctle80
Percentage of time <= 80% oxygen saturation (SaO2)
Percentage of time <= 80% oxygen saturation (SaO2)

[100*(total number of minutes with oxygen saturation (SaO2) <= 80) / (Total Sleep Time (TST))].

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctle85
Percentage of time <= 85% oxygen saturation (SaO2)
Percentage of time <= 85% oxygen saturation (SaO2)

[100*(total number of minutes with oxygen saturation (SaO2) <= 85) / (Total Sleep Time (TST))].

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctle90
Percentage of time <= 90% oxygen saturation (SaO2)
Percentage of time <= 90% oxygen saturation (SaO2)

[100*(total number of minutes with oxygen saturation (SaO2) <= 90) / (Total Sleep Time (TST))].

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctle92
Percentage of time <= 92% oxygen saturation (SaO2)
Percentage of time <= 92% oxygen saturation (SaO2)

[100*(total number of minutes with oxygen saturation (SaO2) <= 92) / (Total Sleep Time (TST))].

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctlt85
Percentage of time < 85% oxygen saturation (SaO2)
Percentage of time < 85% oxygen saturation (SaO2)

[100*(total number of minutes with oxygen saturation (SaO2) < 85) / (Total Sleep Time (TST))].

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctlt90
Percentage of time < 90% oxygen saturation (SaO2)
Percentage of time < 90% oxygen saturation (SaO2)

[100*(total number of minutes with oxygen saturation (SaO2) < 90) / (Total Sleep Time (TST))].

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa75
Percentage of sleep time oxygen saturation (SaO2) is <= 75%
Percentage of sleep time oxygen saturation (SaO2) is <= 75%

[(total time oxygen saturation (SaO2) is <= 75%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa80
Percentage of sleep time oxygen saturation (SaO2) is <= 80%
Percentage of sleep time oxygen saturation (SaO2) is <= 80%

[(total time oxygen saturation (SaO2) is <= 80%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa80h
Percentage of sleep time oxygen saturation (SaO2) is < 80%
Percentage of sleep time oxygen saturation (SaO2) is < 80%

[(total time oxygen saturation (SaO2) is < 80%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa85
Percentage of sleep time oxygen saturation (SaO2) is <= 85%
Percentage of sleep time oxygen saturation (SaO2) is <= 85%

[(total time oxygen saturation (SaO2) is <= 85%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa85h
Percentage of sleep time oxygen saturation (SaO2) is < 85%
Percentage of sleep time oxygen saturation (SaO2) is < 85%

[(total time oxygen saturation (SaO2) is < 85%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa90
Percentage of sleep time oxygen saturation (SaO2) is <= 90%
Percentage of sleep time oxygen saturation (SaO2) is <= 90%

[(total time oxygen saturation (SaO2) is <= 90%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa90h
Percentage of sleep time oxygen saturation (SaO2) is < 90%
Percentage of sleep time oxygen saturation (SaO2) is < 90%

[(total time oxygen saturation (SaO2) is < 90%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa92
Percentage of sleep time oxygen saturation (SaO2) is <= 92%
Percentage of sleep time oxygen saturation (SaO2) is <= 92%

[(total time oxygen saturation (SaO2) is <= 92%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa95
Percentage of sleep time oxygen saturation (SaO2) is <= 95%
Percentage of sleep time oxygen saturation (SaO2) is <= 95%

[(total time oxygen saturation (SaO2) is <= 95%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
pctsa95h
Percentage of sleep time oxygen saturation (SaO2) is < 95%
Percentage of sleep time oxygen saturation (SaO2) is < 95%

[(total time oxygen saturation (SaO2) is < 95%) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
sao2nrem
Average oxygen saturation (SaO2) non-rapid eye movement sleep (NREM)
Average oxygen saturation (SaO2) non-rapid eye movement sleep (NREM)

[mean(all oxygen saturation (SaO2) values in non-rapid eye movement sleep (NREM))]. will be missing if study scored as sleep/wake only.

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
sao2rem
Average oxygen saturation (SaO2) rapid eye movement sleep (REM)
Average oxygen saturation (SaO2) rapid eye movement sleep (REM)

[mean(all oxygen saturation (SaO2) values in rapid eye movement sleep (REM))]. will be missing if study scored as sleep/wake only.

Sleep/Polysomnography (PSG)/Oxygen Saturation (SaO2)
longap
Longest apnea
Longest apnea Sleep/Polysomnography (PSG)/Respiratory Events/Apnea
cardnba
Central apnea per hour with arousals (Non-rapid eye movement sleep (NREM), Supine, all desaturations)
Central apnea per hour with arousals (Non-rapid eye movement sleep (NREM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Apnea/Central
cavgdur
Average central apnea length
Average central apnea length

duration (entire recording)

Sleep/Polysomnography (PSG)/Respiratory Events/Apnea/Central
hmanrop
Number of mixed apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations)
Number of mixed apnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Apnea/Mixed
oavgdur
Average obstructive apnea length
Average obstructive apnea length

duration (entire recording)

Sleep/Polysomnography (PSG)/Respiratory Events/Apnea/Obstructive
havgdur
Average hypopnea length
Average hypopnea length

duration (entire recording)

Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
longhyp
Longest hypopnea
Longest hypopnea

(entire recording)

Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinba
Hypopnea per hour with arousals (Non-rapid eye movement sleep (NREM), Supine, all desaturations)
Hypopnea per hour with arousals (Non-rapid eye movement sleep (NREM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinba2
Hypopnea per hour with >=2% desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Hypopnea per hour with >=2% desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinba3
Hypopnea per hour with >=3% desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine)
Hypopnea per hour with >=3% desaturation or arousal (Non-rapid eye movement sleep (NREM), Supine) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinbp
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Supine, all desaturations)
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinbp3
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=3% desaturation)
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Supine, >=3% desaturation) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinoa3
Hypopnea per hour with >=3% desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine)
Hypopnea per hour with >=3% desaturation or arousal (Non-rapid eye movement sleep (NREM), Non-supine) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinop
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations)
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdinop3
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=3% desaturation)
Hypopnea per hour (Non-rapid eye movement sleep (NREM), Non-supine, >=3% desaturation) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdirba3
Hypopnea per hour with >=3% desaturation or arousal (Rapid eye movement sleep (REM), Supine)
Hypopnea per hour with >=3% desaturation or arousal (Rapid eye movement sleep (REM), Supine) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdirbp
Hypopnea per hour (Rapid eye movement sleep (REM), Supine, all desaturations)
Hypopnea per hour (Rapid eye movement sleep (REM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdirbp3
Hypopnea per hour (Rapid eye movement sleep (REM), Supine, >=3% desaturation)
Hypopnea per hour (Rapid eye movement sleep (REM), Supine, >=3% desaturation) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdiroa
Hypopnea per hour with arousals (Rapid eye movement sleep (REM), Non-supine, all desaturations)
Hypopnea per hour with arousals (Rapid eye movement sleep (REM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdiroa3
Hypopnea per hour with >=3% desaturation or arousal (Rapid eye movement sleep (REM), Non-supine)
Hypopnea per hour with >=3% desaturation or arousal (Rapid eye movement sleep (REM), Non-supine) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdirop
Hypopnea per hour (Rapid eye movement sleep (REM), Non-supine, all desaturations)
Hypopnea per hour (Rapid eye movement sleep (REM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
rdirop3
Hypopnea per hour (Rapid eye movement sleep (REM), Non-supine, >=3% desaturation)
Hypopnea per hour (Rapid eye movement sleep (REM), Non-supine, >=3% desaturation) Sleep/Polysomnography (PSG)/Respiratory Events/Hypopnea
ahi3
Apnea / Hypopnea events with >= 3% percent desaturation per hour of sleep
Apnea / Hypopnea events with >= 3% percent desaturation per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h3
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h3a
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h4
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h4a
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep
Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h3
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h3a
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h4
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h4a
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahilt2
Obstructive Apnea Index (OAI) < 1 and Apnea-Hypopnea Index (AHI) < 2 (normal range) = 1 Ineligible Normal
Obstructive Apnea Index (OAI) < 1 and Apnea-Hypopnea Index (AHI) < 2 (normal range) = 1 Ineligible Normal Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h3
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h3a
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h4
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h4a
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
ahiu3
Respiratory Disturbance Index (RDI)-Apnea/Hypopnea/AASM Hypopneas (Unsure Compumedics label) with >= 3% desaturation
Respiratory Disturbance Index (RDI)-Apnea/Hypopnea/AASM Hypopneas (Unsure Compumedics label) with >= 3% desaturation Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
cai
Central apnea index
Central apnea index

(Total number of central apneas) / (hours of sleep)

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
cai0p
Central apnea index all desaturations
Central apnea index all desaturations

[(Total number of central apneas associated with all desaturations) / (hours of sleep)]. Will be missing if Total Sleep Time (TST) is 0.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
cent_obs_ratio
Central/Obstructive Apnea ratio at all desaturations
Central/Obstructive Apnea ratio at all desaturations Sleep/Polysomnography (PSG)/Respiratory Events/Indexes