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Childhood Adenotonsillectomy Trial

Name Label Folder
omahi3
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals

{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omahi3b
Supine Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
Supine Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)

{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omahi3_change
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) change between Baseline and End
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) change between Baseline and End Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omahi3nr
Non-rapid eye movement sleep (NREM) Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
Non-rapid eye movement sleep (NREM) Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)

{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omahi3o
Non-supine Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
Non-supine Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)

{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omahi3r
Rapid eye movement sleep (REM) Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
Rapid eye movement sleep (REM) Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)

{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
omai0p
Childhood Adenotonsillectomy Trial (CHAT) OMAI (obstructive/mixed apnea index all desaturations) no centrals
Childhood Adenotonsillectomy Trial (CHAT) OMAI (obstructive/mixed apnea index all desaturations) no centrals Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
pcstah3d
Percentage of sleep time in apnea+hypopnea with >=3% desaturation
Percentage of sleep time in apnea+hypopnea with >=3% desaturation Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
pcstahar
Percentage of sleep time in apnea+hypopnea with arousal
Percentage of sleep time in apnea+hypopnea with arousal Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
pcstahda
Percentage of sleep time in apnea+hypopnea with >=3% desaturation or arousal
Percentage of sleep time in apnea+hypopnea with >=3% desaturation or arousal Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim3p
Overall Respiratory Disturbance Index (RDI) at >=3% desaturation
Overall Respiratory Disturbance Index (RDI) at >=3% desaturation

[(total number of apneas and hypopneas associated with >= 3% desaturation) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim3pa
Overall Respiratory Disturbance Index (RDI) at >=3% desaturation or arousal
Overall Respiratory Disturbance Index (RDI) at >=3% desaturation or arousal

[(total number of apneas and hypopneas with >= 3% desaturation or arousal) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim3pns
Overall non-supine Respiratory Disturbance Index (RDI) at >=3% desaturation
Overall non-supine Respiratory Disturbance Index (RDI) at >=3% desaturation

[(total number of apneas and hypopneas in non-supine body position associated with >= 3% desaturation) / (hours of sleep)]. will be missing if no time non-supine or low position sensor quality.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim3ps
Overall supine Respiratory Disturbance Index (RDI) at >=3% desaturation
Overall supine Respiratory Disturbance Index (RDI) at >=3% desaturation

[(total number of apneas and hypopneas in supine body position associated with >= 3% desaturation) / (hours of sleep)]. will be missing if no time supine or low position sensor quality.

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim4p
Overall Respiratory Disturbance Index (RDI) at >=4% desaturation
Overall Respiratory Disturbance Index (RDI) at >=4% desaturation

[(total number of apneas and hypopneas associated with >= 4% desaturation) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
rdim4pa
Overall Respiratory Disturbance Index (RDI) at >=4% desaturation or arousal
Overall Respiratory Disturbance Index (RDI) at >=4% desaturation or arousal

[(total number of apneas and hypopneas with >= 4% desaturation or arousal) / (hours of sleep)]

Sleep/Polysomnography (PSG)/Respiratory Events/Indexes
capdur
Hours of usable cap
Hours of usable cap

Hours of usable cap signal - requires use of calibrated channel type with upper and lower limits for valid signal

Sleep/Polysomnography (PSG)/Signal Quality
overall
Overall study grade
Overall study grade Sleep/Polysomnography (PSG)/Signal Quality
oximdur
Hours of usable oximetry
Hours of usable oximetry Sleep/Polysomnography (PSG)/Signal Quality
qucap
Quality of cap
Quality of cap

usable mainly artifact free signal

Sleep/Polysomnography (PSG)/Signal Quality
quco2
Quality of carbon dioxide (CO2)
Quality of carbon dioxide (CO2) Sleep/Polysomnography (PSG)/Signal Quality
quoxim
Quality of oximetry
Quality of oximetry Sleep/Polysomnography (PSG)/Signal Quality
nremepbp
Sleep time (Non-rapid eye movement sleep (NREM), Supine)
Sleep time (Non-rapid eye movement sleep (NREM), Supine) Sleep/Polysomnography (PSG)/Sleep Architecture
nremepop
Sleep time (Non-rapid eye movement sleep (NREM), Non-supine)
Sleep time (Non-rapid eye movement sleep (NREM), Non-supine) Sleep/Polysomnography (PSG)/Sleep Architecture
nsupinep
Percentage time non-supine
Percentage time non-supine

[100*(number of minutes of sleep in non-supine body position) / (Total Sleep Time (TST))]

Sleep/Polysomnography (PSG)/Sleep Architecture
remepbp
Sleep time (Rapid eye movement sleep (REM), Supine)
Sleep time (Rapid eye movement sleep (REM), Supine)

Total time in rapid eye movement sleep (REM) with supine body position

Sleep/Polysomnography (PSG)/Sleep Architecture
remepop
Sleep Time (Rapid eye movement sleep (REM), Non-supine)
Sleep Time (Rapid eye movement sleep (REM), Non-supine)

Total time in rapid eye movement sleep (REM) with non-supine body position

Sleep/Polysomnography (PSG)/Sleep Architecture
rem_lat1
Rapid eye movement sleep (REM) latency I in minutes slp onset to first rapid eye movement sleep (REM)
Rapid eye movement sleep (REM) latency I in minutes slp onset to first rapid eye movement sleep (REM)

Total time from beginning of sleep to first epoch of rapid eye movement sleep (REM)

Sleep/Polysomnography (PSG)/Sleep Architecture
slp_eff
Sleep efficiency percentage
Sleep efficiency percentage

Percentage of time in bed that was spent sleeping [100*(Total Sleep Time (TST)) / (total time in bed)]

Sleep/Polysomnography (PSG)/Sleep Architecture
slplatp
Sleep latency
Sleep latency

Time from lights out time to beginning of sleep

Sleep/Polysomnography (PSG)/Sleep Architecture
supinep
Percentage of time supine
Percentage of time supine

Percent of sleep time in supine body position [100*(number of minutes of sleep in supine body position) / (Total Sleep Time (TST))]

Sleep/Polysomnography (PSG)/Sleep Architecture
timebedp
Time in bed
Time in bed

Time from lights out to lights on

Sleep/Polysomnography (PSG)/Sleep Architecture
timerem
Time rapid eye movement sleep (REM)
Time rapid eye movement sleep (REM)

Total time scored as rapid eye movement sleep (REM)

Sleep/Polysomnography (PSG)/Sleep Architecture
timeremp
Percentage time rapid eye movement sleep (REM)
Percentage time rapid eye movement sleep (REM)

Percent of sleep time in rapid eye movement sleep (REM) [100*(number of minutes scored as rapid eye movement sleep (REM)) / (Total Sleep Time (TST))] * 100

Sleep/Polysomnography (PSG)/Sleep Architecture
times34p
Percentage time stage 3-4
Percentage time stage 3-4

Percent of sleep time in stage 3-4 [100*(number of minutes scored as stage 3-4) / (Total Sleep Time (TST))]

Sleep/Polysomnography (PSG)/Sleep Architecture
timest1
Time stage 1
Time stage 1

Total time scored as stage 1 rounded to nearest minute

Sleep/Polysomnography (PSG)/Sleep Architecture
timest1p
Percentage of time stage 1
Percentage of time stage 1

Percent of sleep time in stage 1 [100*(number of minutes scored as stage 1) / (Total Sleep Time (TST))]

Sleep/Polysomnography (PSG)/Sleep Architecture
timest2
Time stage 2
Time stage 2

Total time scored as stage 2 rounded to nearest minute

Sleep/Polysomnography (PSG)/Sleep Architecture
timest2p
Percentage of time stage 2
Percentage of time stage 2

Percent of sleep time in stage 2 [100*(number of minutes scored as stage 2) / (Total Sleep Time (TST))]

Sleep/Polysomnography (PSG)/Sleep Architecture
timest34
Time stage 3-4
Time stage 3-4

Total time scored as stage 3/4 rounded to nearest minute

Sleep/Polysomnography (PSG)/Sleep Architecture
waso
Wake after sleep onset
Wake after sleep onset

Total amount of time spent awake after going to sleep [(time in bed) - (sleep latency) - (Total Sleep Time (TST))]

Sleep/Polysomnography (PSG)/Sleep Architecture
noplm
Number of Periodic limb movement (PLM) during sleep
Number of Periodic limb movement (PLM) during sleep Sleep/Polysomnography (PSG)/Sleep Events
avgrplm
Number of Periodic limb movement (PLM) per hour of rapid eye movement sleep (REM)
Number of Periodic limb movement (PLM) per hour of rapid eye movement sleep (REM) Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements
lmar
Number of limb movements with arousal and respiratory event
Number of limb movements with arousal and respiratory event

Total

Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements
plmaslp
Number of Periodic limb movements (PLMs) with arousal (sleep)
Number of Periodic limb movements (PLMs) with arousal (sleep)

Total

Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements
posn
Position sensor working
Position sensor working Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements
haspaperwork
Paperwork received at reading center
Paperwork received at reading center Sleep/Polysomnography (PSG)/Administrative
hipriscore
Flagged for priority scoring
Flagged for priority scoring Sleep/Polysomnography (PSG)/Administrative
losoth
Data lost - other
Data lost - other

1=data lost - other

Sleep/Polysomnography (PSG)/Administrative
maxresou30
Maximum length respiratory event >30 seconds verified
Maximum length respiratory event >30 seconds verified

1=Outlier - max length respiratory event > 30 seconds verified

Sleep/Polysomnography (PSG)/Administrative
month
Calendar month of Polysomnography (PSG)
Calendar month of Polysomnography (PSG) Sleep/Polysomnography (PSG)/Administrative
npflow
Flow limitation
Flow limitation

1=flow limitation observed

Sleep/Polysomnography (PSG)/Administrative
processdt
Date data were processed
Date data were processed Sleep/Polysomnography (PSG)/Administrative
rcvddt
Date received at reading center
Date received at reading center Sleep/Polysomnography (PSG)/Administrative
reviewdt
Date of preliminary review
Date of preliminary review Sleep/Polysomnography (PSG)/Administrative
rsnco
Reason for study failure
Reason for study failure Sleep/Polysomnography (PSG)/Administrative
scordt
Date scored
Date scored

Date scoring performed at reading center

Sleep/Polysomnography (PSG)/Administrative
scoredt
Scored date
Scored date

Date scored (date of birth in compumedics screen) if study reprocessed date scored changes

Sleep/Polysomnography (PSG)/Administrative
scoreridr
Recoded Scorer ID
Recoded Scorer ID Sleep/Polysomnography (PSG)/Administrative
scorid
Scorer ID
Scorer ID

ID of reading center staff who performed scoring

Sleep/Polysomnography (PSG)/Administrative
season
Season for Polysomnography (PSG): Aug-Nov vs. All the other
Season for Polysomnography (PSG): Aug-Nov vs. All the other Sleep/Polysomnography (PSG)/Administrative
slpprdm
Sleep period
Sleep period

Total sleep period (minutes) = Total Sleep Time (TST) + total time awake, includes time spent awake after lights on and therefore is not correct (not used in final dataset)

Sleep/Polysomnography (PSG)/Administrative
staendt
Week ending date
Week ending date Sleep/Polysomnography (PSG)/Administrative
status
Pass fail status (passed=1 failed=2)
Pass fail status (passed=1 failed=2) Sleep/Polysomnography (PSG)/Administrative
stdatep
Start date
Start date

Study date (date recording started)

Sleep/Polysomnography (PSG)/Administrative
stdurm
Study length (epoch 1 to last epoch)
Study length (epoch 1 to last epoch)

Time from recording beginning to end, rounded to nearest minute

Sleep/Polysomnography (PSG)/Administrative
stlonp
Lights on set by scorer
Lights on set by scorer

Lights on time - end of in-bed period set by scorer

Sleep/Polysomnography (PSG)/Administrative
unuhroth
Urgent - other heart rate arrhythmia, heart block, v-tach, etc. = 1 urgent ineligible
Urgent - other heart rate arrhythmia, heart block, v-tach, etc. = 1 urgent ineligible Sleep/Polysomnography (PSG)/Administrative
unuhrou
Urgent - problem heart rate < 40 bpm or > 140 bpm > 2 minutes = 1 urgent ineligible
Urgent - problem heart rate < 40 bpm or > 140 bpm > 2 minutes = 1 urgent ineligible

1=Medical alert for unusual heart rate or electrocardiogram (ECG)

Sleep/Polysomnography (PSG)/Administrative
unustgou
Extreme staging distribution
Extreme staging distribution

1=outlier - unusual staging

Sleep/Polysomnography (PSG)/Administrative
ahnrembp
Arousals per hour (Non-rapid eye movement sleep (NREM), Supine, all desaturations)
Arousals per hour (Non-rapid eye movement sleep (NREM), Supine, all desaturations)

Number of arousals per hour during non-rapid eye movement sleep (NREM) and supine body position

Sleep/Polysomnography (PSG)/Arousals
ahnremop
Arousals per hour (Non-rapid eye movement sleep (NREM), Non-supine, all desaturation)
Arousals per hour (Non-rapid eye movement sleep (NREM), Non-supine, all desaturation)

Number of arousals per hour during non-rapid eye movement sleep (NREM) and non-supine body position

Sleep/Polysomnography (PSG)/Arousals
ahrembp
Arousals per hour (Rapid eye movement sleep (REM), Supine, all desaturations)
Arousals per hour (Rapid eye movement sleep (REM), Supine, all desaturations)

Number of arousals per hour during rapid eye movement sleep (REM) and supine body position

Sleep/Polysomnography (PSG)/Arousals
ahremop
Arousals per hour (Rapid eye movement sleep (REM), Non-supine, all desaturations)
Arousals per hour (Rapid eye movement sleep (REM), Non-supine, all desaturations)

Number of arousals per hour during rapid eye movement sleep (REM) and non-supine body position

Sleep/Polysomnography (PSG)/Arousals
arnrembp
Number of arousals (Non-rapid eye movement sleep (NREM), Supine, all desaturation)
Number of arousals (Non-rapid eye movement sleep (NREM), Supine, all desaturation) Sleep/Polysomnography (PSG)/Arousals
arnremop
Number of arousals (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations)
Number of arousals (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Arousals
arrembp
Number of arousals (Rapid eye movement sleep (REM), Supine, all desaturations)
Number of arousals (Rapid eye movement sleep (REM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Arousals
arremop
Number of arousals (Rapid eye movement sleep (REM), Non-supine, all desaturations)
Number of arousals (Rapid eye movement sleep (REM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Arousals
arsl3ou
Arousal index < 3 verified
Arousal index < 3 verified

1=Outlier - arousal index < 3 verified

Sleep/Polysomnography (PSG)/Arousals
lgai
LOG Arousal Index
LOG Arousal Index

Original source: MS 003

Sleep/Polysomnography (PSG)/Arousals
lgai_0
LOG Arousal Index (0 replaced with 0.0001)
LOG Arousal Index (0 replaced with 0.0001)

Original source: MS 003

Sleep/Polysomnography (PSG)/Arousals
cat_pctco2g50
pctco2g50 < 25 binary
pctco2g50 < 25 binary Sleep/Polysomnography (PSG)/Capnography
co2avgnr
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
co2avgr
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
co2blslp
Baseline end-tidal carbon dioxide (ETCO2) asleep
Baseline end-tidal carbon dioxide (ETCO2) asleep Sleep/Polysomnography (PSG)/Capnography
co2blwake
Baseline end-tidal carbon dioxide (ETCO2) awake
Baseline end-tidal carbon dioxide (ETCO2) awake Sleep/Polysomnography (PSG)/Capnography
co2peak
Peak end-tidal carbon dioxide (ETCO2) asleep
Peak end-tidal carbon dioxide (ETCO2) asleep Sleep/Polysomnography (PSG)/Capnography
lgpctco2g50
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg)
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg)

Original source: MS 003

Sleep/Polysomnography (PSG)/Capnography
lgpctco2g50_0
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg) (0 replaced with 0.0001)
LOG % Total Sleep Time (TST) with carbon dioxide (CO2) > 50 millimeters (mm) mercury (Hg) (0 replaced with 0.0001)

Original source: MS 003

Sleep/Polysomnography (PSG)/Capnography
nepctco2g50_cat
Carbon dioxide (CO2) cutoff < 25
Carbon dioxide (CO2) cutoff < 25 Sleep/Polysomnography (PSG)/Capnography
pctco2g45
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
pctco2g50
Percentage of Total Sleep Time (TST) end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg)
Percentage of Total Sleep Time (TST) end-tidal carbon dioxide (ETCO2) > 50 millimeters (mm) mercury (Hg) Sleep/Polysomnography (PSG)/Capnography
aavbnbh
Average heart rate with arousal (Non-rapid eye movement sleep (NREM), Supine, all desaturations)
Average heart rate with arousal (Non-rapid eye movement sleep (NREM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Heart Rate (HR)
aavbnoh
Average heart rate with arousal (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations)
Average heart rate with arousal (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Heart Rate (HR)
aavbrbh
Average heart rate with arousal (Rapid eye movement sleep (REM), Supine, all desaturations)
Average heart rate with arousal (Rapid eye movement sleep (REM), Supine, all desaturations) Sleep/Polysomnography (PSG)/Heart Rate (HR)
aavbroh
Average heart rate with arousal (Rapid eye movement sleep (REM), Non-supine, all desaturations)
Average heart rate with arousal (Rapid eye movement sleep (REM), Non-supine, all desaturations) Sleep/Polysomnography (PSG)/Heart Rate (HR)
amnbnbh
Minimum heart rate with arousal (Non-rapid eye movement sleep (NREM), Supine, all desaturations)
Minimum heart rate with arousal (Non-rapid eye movement sleep (NREM), Supine, all desaturations)

Lowest

Sleep/Polysomnography (PSG)/Heart Rate (HR)
amnbnoh
Minimum heart rate with arousal (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations)
Minimum heart rate with arousal (Non-rapid eye movement sleep (NREM), Non-supine, all desaturations)

Lowest

Sleep/Polysomnography (PSG)/Heart Rate (HR)
amnbrbh
Minimum heart rate with arousal (Rapid eye movement sleep (REM), Supine, all desaturations)
Minimum heart rate with arousal (Rapid eye movement sleep (REM), Supine, all desaturations)

Lowest

Sleep/Polysomnography (PSG)/Heart Rate (HR)
amnbroh
Minimum heart rate with arousal (Rapid eye movement sleep (REM), Non-supine, all desaturations)
Minimum heart rate with arousal (Rapid eye movement sleep (REM), Non-supine, all desaturations)

Lowest

Sleep/Polysomnography (PSG)/Heart Rate (HR)