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Percentage of total estimated sleep duration with < 80% oxygen saturation from type IV home sleep apnea test

slpa99 under Sleep Monitoring/Polysomnography/Sleep Architecture in HCHS variables

Estimated sleep duration, providing an approximation of total sleep duration (i.e. total sleep time) inferred from analysis of non-EEG channels Zhao et al., 2017 (PMID:27707441)

Average sleep duration (hours)

slpdur under Sleep Questionnaires/Sleep Habits in HCHS variables

This is a numeric variable that calculates the average daily sleep duration during an entire week (five weekdays and two weekend days), using self-reported sleep data.

Weekday sleep duration (hours)

slpdur_wkday under Sleep Questionnaires/Sleep Habits in HCHS variables

This is a numeric variable that calculates the self-reported sleep duration during weekdays.

Weekend sleep duration (hours)

slpdur_wkend under Sleep Questionnaires/Sleep Habits in HCHS variables

This is a numeric variable that calculates the self-reported sleep duration during weekend days.

Self-reported daily sleep duration in main sleep

totsleep under Sleep Questionnaires/Sleep Habits in WSC variables

Calculated - Weighted average of weekday and weekend self-reported sleep duration in main sleeps

Self-reported daily sleep duration in main sleep and naps combined

totsleepnap under Sleep Questionnaires/Sleep Habits in WSC variables

Calculated - Weighted average of weekday and weekend self-reported sleep duration in main sleeps and naps combined

Percent of total sleep duration in stage 1 sleep from type I polysomnography

pctdursp_s1_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percent of total sleep duration in stage 2 sleep from type I polysomnography

pctdursp_s2_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percent of total sleep duration in stage 3 - 4 sleep from type I polysomnography

pctdursp_s3_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percent of total sleep duration with oxygen saturation < 75% from type I polysomnography

pctdursp_salt75_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percent of total sleep duration with oxygen saturation < 80% from type I polysomnography

pctdursp_salt80_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percent of total sleep duration with oxygen saturation < 85% from type I polysomnography

pctdursp_salt85_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Percent of total sleep duration with oxygen saturation < 90% from type I polysomnography

pctdursp_salt90_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time.

Total sleep duration from type I polysomnography

ttldursp_f1t1 under Sleep Monitoring/Polysomnography in ABC variables

Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep, conventionally called total sleep time

Average duration of apnea from type I polysomnography

apavgdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Average duration of apnea (entire recording)

Total duration of mixed apnea from type I polysomnography

aptdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of mixed apnea (entire recording)

Average duration of central apnea from type I polysomnography

cavgdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Average duration of central apnea (entire recording)

Average duration of hypopnea from type I polysomnography

havgdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Average duration of hypopnea (entire recording)

Total duration of hypopnea from type I polysomnography

htdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of hypopnea (entire recording)

Average duration of obstructive apnea from type I polysomnography

oavgdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Average duration of obstructive apnea (entire recording)

Total duration of obstructive apnea in NREM sleep from type I polysomnography

ontdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of obstructive apnea in NREM sleep

Total duration of obstructive apnea in NREM sleep in supine position from type I polysomnography

ontdurbp under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of obstructive apnea in NREM sleep with non-supine body position

Total duration of obstructive apnea in NREM sleep in non-supine position from type I polysomnography

ontdurop under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of obstructive apnea in REM sleep with non-supine body position

Total duration of obstructive apnea in REM sleep in non-supine position from type I polysomnography

ortdurop under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of obstructive apnea in REM sleep with non-supine body position

Total duration of obstructive apnea from type I polysomnography

otdur under Sleep Monitoring/Polysomnography/Respiratory Event Lengths in CFS variables

Total duration of obstructive apnea (entire recording)