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Childhood Adenotonsillectomy Trial

Name Label Folder
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
hremt1p
Number of rapid eye movement sleep (REM) to stage 1 shifts per hour of sleep
Number of rapid eye movement sleep (REM) to stage 1 shifts per hour of sleep Sleep/Polysomnography (PSG)/Sleep Architecture
hremt2p
Number of rapid eye movement sleep (REM) to stage 2 shifts per hour of sleep
Number of rapid eye movement sleep (REM) to stage 2 shifts per hour of sleep Sleep/Polysomnography (PSG)/Sleep Architecture
hremt34p
Number of rapid eye movement sleep (REM) to stage 3/4 shifts per hour of sleep
Number of rapid eye movement sleep (REM) to stage 3/4 shifts per hour of sleep Sleep/Polysomnography (PSG)/Sleep Architecture
hslptawp
Number of sleep to awake shifts per hour
Number of sleep to awake shifts per hour Sleep/Polysomnography (PSG)/Sleep Architecture
hstg2t1p
Number of stage 2 to stage 1 shifts per hour of sleep
Number of stage 2 to stage 1 shifts per hour of sleep Sleep/Polysomnography (PSG)/Sleep Architecture
hstg342p
Number of stage 3/4 to stage 1/2 shifts per hour of sleep
Number of stage 3/4 to stage 1/2 shifts per hour of sleep Sleep/Polysomnography (PSG)/Sleep Architecture
minremp
Time in rapid eye movement sleep (REM)
Time in rapid eye movement sleep (REM)

Total time scored as rapid eye movement sleep (REM), rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
minstg1p
Time in stage 1 sleep
Time in stage 1 sleep

Total time scored as stage 1, rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
minstg2p
Time in stage 2 sleep
Time in stage 2 sleep

Total time scored as stage 2, rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
mnstg34p
Time in stage 3-4 sleep
Time in stage 3-4 sleep

Total time scored as stage 3/4, rounded to nearest minute (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
pctstapn
Percentage of sleep time in apnea
Percentage of sleep time in apnea Sleep/Polysomnography (PSG)/Sleep Architecture
rcrdtime
Recording time
Recording time

total recording time (minutes)

Sleep/Polysomnography (PSG)/Sleep Architecture
remlaiip
Rapid eye movement sleep (REM) Latency II - excluding wake
Rapid eye movement sleep (REM) Latency II - excluding wake

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

Sleep/Polysomnography (PSG)/Sleep Architecture
remlaip
Rapid eye movement sleep (REM) Latency I - including wake time
Rapid eye movement sleep (REM) Latency I - including wake time

Total time from beginning of sleep to first epoch of rapid eye movement sleep (REM) (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)

Sleep/Polysomnography (PSG)/Sleep Architecture
remlatm
Rapid eye movement sleep (REM) latency I
Rapid eye movement sleep (REM) latency I

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

Sleep/Polysomnography (PSG)/Sleep Architecture
remnrempr
Scoring rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable
Scoring rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable

1=Sleep staging problem - scoring rapid eye movement sleep (REM)/non-rapid eye movement sleep (NREM) unreliable (when identification of Stage rapid eye movement sleep (REM) is unreliable (usually due to poor or missing EMG or when both EOGs are absent))

Sleep/Polysomnography (PSG)/Sleep Architecture
remt1p
Number of rapid eye movement sleep (REM) to stage 1 shifts during sleep
Number of rapid eye movement sleep (REM) to stage 1 shifts during sleep Sleep/Polysomnography (PSG)/Sleep Architecture
remt2p
Number of rapid eye movement sleep (REM) to stage 2 shifts during sleep
Number of rapid eye movement sleep (REM) to stage 2 shifts during sleep Sleep/Polysomnography (PSG)/Sleep Architecture
remt34p
Number of rapid eye movement sleep (REM) to stage 3/4 shifts during sleep
Number of rapid eye movement sleep (REM) to stage 3/4 shifts during sleep Sleep/Polysomnography (PSG)/Sleep Architecture
slpeffp
Sleep efficiency
Sleep efficiency

[(Total Sleep Time (TST)) / (time from sleep onset to morning waking)] * 100 (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)

Sleep/Polysomnography (PSG)/Sleep Architecture
slpprdp
Total sleep time (TST)
Total sleep time (TST)

Total time from lights out to lights on that is scored as sleep

Sleep/Polysomnography (PSG)/Sleep Architecture
slptawp
Number of sleep to awake shifts
Number of sleep to awake shifts Sleep/Polysomnography (PSG)/Sleep Architecture
stg2t1p
Number of stage 2 to stage 1 shifts during sleep
Number of stage 2 to stage 1 shifts during sleep Sleep/Polysomnography (PSG)/Sleep Architecture
stg34t2p
Number of stage 3/4 to stage 1/2 shifts during sleep
Number of stage 3/4 to stage 1/2 shifts during sleep Sleep/Polysomnography (PSG)/Sleep Architecture
tmremp
Percentage of sleep time in rapid eye movement sleep (REM)
Percentage of sleep time in rapid eye movement sleep (REM)

[(Number of minutes scored as rapid eye movement sleep (REM)) / (Total Sleep Time (TST))] * 100 (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
tmstg1p
Percentage of sleep time in stage 1 sleep
Percentage of sleep time in stage 1 sleep

[(Number of minutes scored as stage 1) / (Total Sleep Time (TST))] * 100 (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
tmstg2p
Percentage of sleep time in stage 2 sleep
Percentage of sleep time in stage 2 sleep

[(Number of minutes scored as stage 2) / (Total Sleep Time (TST))] * 100 (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
tmstg34p
Percentage of sleep time in stage 3-4 sleep
Percentage of sleep time in stage 3-4 sleep

[(Number of minutes scored as stage 3/4) / (Total Sleep Time (TST))] * 100 (use calculated variable - sleep wake studies screened out)

Sleep/Polysomnography (PSG)/Sleep Architecture
wasom
Wake time during sleep period
Wake time during sleep period

Actually is total time awake after sleep onset - includes wake time after lights on (not used in final dataset)

Sleep/Polysomnography (PSG)/Sleep Architecture