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times34p under Sleep/Polysomnography (PSG)/Sleep Architecture in CHAT variables

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

timest34 under Sleep/Polysomnography (PSG)/Sleep Architecture in CHAT variables

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

Percentage of sleep time in stage 3-4 sleep

tmstg34p under Sleep/Polysomnography (PSG)/Sleep Architecture in CHAT variables

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

Number of Periodic limb movements (PLMs) with arousal (delta Sleep)

plmadelta under Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements in CHAT variables

Total

Number of Periodic limb movements (PLMs) with arousal and respiratory event (delta sleep)

plmardelta under Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements in CHAT variables

Total

Number of Periodic limb movement (PLM) clusters with arousal (delta Sleep)

plmcadelta under Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements in CHAT variables

Total

Number of Periodic limb movement (PLM) clusters with arousal and respiratory event (delta sleep)

plmcardelta under Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements in CHAT variables

Total

Number of Periodic limb movement (PLM) clusters with respiratory events (delta sleep)

plmcrdelta under Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements in CHAT variables

Total

Number of Periodic limb movements (PLMs) with respiratory events (delta sleep)

plmrdelta under Sleep/Polysomnography (PSG)/Sleep Events/Limb Movements in CHAT variables

Total

Percent of sleep time in Stage 3-4

times34p under Measurements/Polysomnography (PSG) in CCSHS variables

[100*(number of minutes scored as stage 3-4 sleep)/(total sleep time)]

Time in Stage 3/4 sleep

timest34 under Measurements/Polysomnography (PSG) in CCSHS variables

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

Polysomnography (PSG) Quality Assessment: Stage 2/Stage 3-4 scoring unreliable

stg2stg3pr under Polysomnography (PSG)/Signal Quality in SOF variables

Scorer noted that there was a problem differentiating stage 2 and stage 3/4 sleep.

Polysomnography (PSG) Quality Assessment: Wake/Sleep scoring unreliable

wakslepr under Polysomnography (PSG)/Signal Quality in SOF variables

Scorer noted that there was a problem differentiating stage wake from stage sleep.

Number of rapid eye movement sleep (REM) to stage 3/4 shifts per hour of sleep

hremt34p under Polysomnography (PSG)/Sleep Architecture in SOF variables

Number of stage 3/4 to stage 1/2 shifts per hour of sleep

hstg342p under Polysomnography (PSG)/Sleep Architecture in SOF variables

Time in stage 3-4 sleep

mnstg34p under Polysomnography (PSG)/Sleep Architecture in SOF variables

Number of rapid eye movement sleep (REM) to stage 3/4 shifts during sleep

remt34p under Polysomnography (PSG)/Sleep Architecture in SOF variables

Number of stage 3/4 to stage 1/2 shifts during sleep

stg34t2p under Polysomnography (PSG)/Sleep Architecture in SOF variables

Percent of sleep time in stage 3-4 sleep

tmstg34p under Polysomnography (PSG)/Sleep Architecture in SOF variables

Number of periodic limb movements (PLMs) per hour of non-rapid eye movement sleep (NREM)

avgnplm under Polysomnography (PSG)/Sleep Events/Limb Movements in SOF variables

Number of periodic limb movements (PLMs) per hour of sleep

avgplm under Polysomnography (PSG)/Sleep Events/Limb Movements in SOF variables

Total number of limb movements with arousal (delta sleep)

lmadelta under Polysomnography (PSG)/Sleep Events/Limb Movements in SOF variables

Total number of limb movements with arousal (Non-rapid eye movement sleep (NREM))

lmanrem under Polysomnography (PSG)/Sleep Events/Limb Movements in SOF variables

Total number of limb movements with arousal (sleep)

lmaslp under Polysomnography (PSG)/Sleep Events/Limb Movements in SOF variables

Total number of limb movements (delta sleep)

lmdelta under Polysomnography (PSG)/Sleep Events/Limb Movements in SOF variables