Harmonized - Polysomnography - Sleep Architecture - APOE Variables - Sleep Data - National Sleep Research Resource - NSRR

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	Name	Label	Folder
	nsrr_pctdursp_s1 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 from polysomnography Harmonized by the NSRR team. Source: pct_s1	Harmonized/Polysomnography/Sleep Architecture
	nsrr_pctdursp_s2 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 from polysomnography Harmonized by the NSRR team. Source: pct_s2	Harmonized/Polysomnography/Sleep Architecture
	nsrr_pctdursp_s3 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 3/4 from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in stage 3/4 from polysomnography Harmonized by the NSRR team. Source: pct_s3	Harmonized/Polysomnography/Sleep Architecture
	nsrr_pctdursp_sr Percentage of total sleep duration (i.e., total sleep time, TST) in REM from polysomnography	Percentage of total sleep duration (i.e., total sleep time, TST) in REM from polysomnography Harmonized by the NSRR team. Source: pct_sr	Harmonized/Polysomnography/Sleep Architecture
	nsrr_tib_f1 Total period of bed (i.e., time in bed) from polysomnography	Total period of bed (i.e., time in bed) from polysomnography Harmonized by the NSRR team. Source: tib	Harmonized/Polysomnography/Sleep Architecture
	nsrr_tst_f1 Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from polysomnography	Total Sleep Duration: the interval between sleep onset and sleep offset while the participant is asleep from polysomnography Conventionally, this would be called total sleep time (TST) (i.e., total time spent in stage 1 or greater). Harmonized by the NSRR team. Source: tst	Harmonized/Polysomnography/Sleep Architecture
	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	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: sleep_efficiency	Harmonized/Polysomnography/Sleep Architecture