Related Variables
| nsrr_ttleffsp_f1 |
Sleep Efficiency: the ratio of total sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) from polysomnography
Harmonized by the NSRR team. Source: :slpeffp: |
Harmonized/Polysomnography/Sleep Architecture | |
| nsrr_ttlprdbd_f1 |
Total In-bed Period: the interval between lights off/in-bed time and lights on/out-bed time from polysomnography
Harmonized by the NSRR team. Conventionally, this would be called time in bed (TIB) |
Harmonized/Polysomnography/Sleep Architecture | |
| sh322 |
Sleep Habits (Sleep Heart Health Study Visit Two (SHHS2)): Did not smoke for a year while smoker
22. Since you began smoking, was there ever a period of one year or more that you did NOT smoke? |
Lifestyle and Behavioral Health/SHHS2 | |
| restan4 |
Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Intervening period bad EEG
"1: Yes", this indicates more than 30 minutes of the sleep period had either lost or unscorable EEG data |
Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 | |
| restan5 | Polysomnography (PSG) Scoring Notes (Sleep Heart Health Study Visit One (SHHS1)): Intervening period bad Resp./Oximetry | Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 | |
| csbre |
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Periodic breathing (10 minutes)
Scorer observed periodic breathing for a period of at least 10 minutes during study. |
Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 | |
| recafsle |
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Data Lost - Recording began after sleep
Data was lost at the beginning of sleep period because recording began after sleep onset. |
Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 | |
| recbeaw |
Polysomnography (PSG) Quality Assessment (Sleep Heart Health Study Visit Two (SHHS2)): Data Lost - Recording ended before wake
Data was lost at the end of sleep period because recording ended before wake. |
Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 | |
| slpeffp |
Sleep Efficiency: the ratio of sleep duration (i.e., total sleep time) to in-bed period (i.e., time in bed) from type II polysomnography
Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB).Percentage of time in bed that was spent sleeping, or the ratio of total sleep time to total time in bed, expressed as a percentage. |
Sleep Monitoring/Polysomnography/Sleep Architecture | |
| timebedp |
Total In-bed Period: the interval between lights out/in-bed time and lights off/out-bed time from type II polysomnography
Calculated. Conventionally this variable would be called time in bed (TIB). |
Sleep Monitoring/Polysomnography/Sleep Architecture | |
| hrswd02 |
Sleep Habits (Sleep Heart Health Study Visit One (SHHS1)): sleep time on weekdays
How many hours of sleep do you usually get at night (or your main sleep period) on weekdays or workdays? (number of hours, up to 2 digits) |
Sleep Questionnaires/Sleep Habits | |
| hrswe02 |
Sleep Habits (Sleep Heart Health Study Visit One (SHHS1)): sleep time on weekends
How many hours of sleep do you usually get at night (or your main sleep period) on weekends or your non-workdays? (number of hours, up to 2 digits) |
Sleep Questionnaires/Sleep Habits |