Name	Label	Folder
nsrr_bmi Body mass index (BMI)	Body mass index (BMI) Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: bmiblquan	Harmonized/Anthropometry
nsrr_bp_diastolic Diastolic blood pressure	Diastolic blood pressure Average resting diastolic blood pressure of two measurements collected in the morning from the upper arm. In cases where either of the measurements was missing, the average was calculated discarding the missing value. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: bp1b_am bp2b_am	Harmonized/Clinical Data
nsrr_bp_systolic Systolic blood pressure	Systolic blood pressure Average resting systolic blood pressure of two measurements collected in the morning from the upper arm. In cases where either of the measurements was missing, the average was calculated discarding the missing value. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: bp1a_am bp2a_am	Harmonized/Clinical Data
nsrr_age Subject age	Subject age Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: age	Harmonized/Demographics
nsrr_age_gt89 Indicate whether the subject's age (in years) used during date obfuscation is greater than 89 years.	Indicate whether the subject's age (in years) used during date obfuscation is greater than 89 years. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: age	Harmonized/Demographics
nsrr_race Subject race	Subject race Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: ethnicity	Harmonized/Demographics
nsrr_sex Subject sex	Subject sex Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: gender	Harmonized/Demographics
nsrr_current_smoker Currently smoking cigarettes	Currently smoking cigarettes Indicates whether subject currently smokes cigarettes. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: currentsmoker smokermedhxhp	Harmonized/Lifestyle and Behavioral Health
nsrr_ever_smoker Ever smoked cigarettes	Ever smoked cigarettes Indicates whether subject ever regularly smoked cigarettes. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: smokermedhxhp	Harmonized/Lifestyle and Behavioral Health
nsrr_ahi_chicago1999 Apnea-Hypopnea Index: (All apneas + hypopneas with >50% flow reduction or discernible flow reduction with >=3% desat or arousal) / hour of sleep	Apnea-Hypopnea Index: (All apneas + hypopneas with >50% flow reduction or discernible flow reduction with >=3% desat or arousal) / hour of sleep Harmonized by the NSRR team. The definition of hypopnea events is consistent with the following clinical guidelines: American Academy of Sleep Medicine (AASM) Chicago 1999 standard. Sleep 1999 (PubMed ID:10450601) Search for all AHI variables consistent with the same clinical guidelines within this dataset Refer to the source for detailed definition for respiratory events: rditstpsg	Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_phrnumar_f1 Arousal Index: Number of arousals per hour of sleep from polysomnography	Arousal Index: Number of arousals per hour of sleep from polysomnography Harmonized by the NSRR team. Source: arousalindexcalc	Harmonized/Polysomnography/Arousal
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: pertsts1psg	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: pertsts2psg	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: pertsts3psg and pertsts4psg	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: pertstrempsg	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttldursp_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: tstpsg	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttldurws_f1 Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from polysomnography	Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from polysomnography Harmonized by the NSRR team. Source: wasoqcpsg	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: sleepeffpsg	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttllatsp_f1 Sleep Latency: the interval between lights-out/in-bed time and sleep onset from polysomnography	Sleep Latency: the interval between lights-out/in-bed time and sleep onset from polysomnography Harmonized by the NSRR team. Source: soflopsg	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	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) Source: tibpsg	Harmonized/Polysomnography/Sleep Architecture
nsrr_ttlprdsp_s1sr REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake	REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake Harmonized by the NSRR team. Source: soremfsopsg	Harmonized/Polysomnography/Sleep Architecture

Apnea Positive Pressure Long-term Efficacy Study