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Mean of two standard seated blood pressure measurements on the night of the PSG. If repeat measurements were taken, the mean of the closest two measurements.

Mean of seated systolic measures

sbp_mean under Clinical Data/Vital Signs in WSC variables

Mean of two standard seated blood pressure measurements on the night of the PSG. If repeat measurements were taken, the mean of the closest two measurements.

Diastolic blood pressure

nsrr_bp_diastolic under Harmonized/Clinical Data in WSC variables

Average resting diastolic blood pressure of two measurements collected from the upper arm in a single clinic visit.When more than two measurements were collected, the average was calculated using the two closest measurements.Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :dbp_mean:

Systolic blood pressure

nsrr_bp_systolic under Harmonized/Clinical Data in WSC variables

Average resting systolic blood pressure of two measurements collected from the upper arm in a single clinic visit. When more than two measurements were collected, the average was calculated using the two closest measurements.Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :sbp_mean:

QRS Axis

qrs under Clinical Data/Diagnostic Studies/Electrocardiogram in SHHS variables

Data derived from standard resting 12-lead electrocardiogram (ECG) with the participant supine. Records were interpreted and Minnesota (MN) codes were provided by clinical cardiologists.

Time of evening collection

bp1time under Clinical Data/Vital Signs/Seated Blood Pressure in CCSHS variables

Time of evening blood pressure (BP) collection

Time of Morning collection

bp2time under Clinical Data/Vital Signs/Seated Blood Pressure in CCSHS variables

Time of morning blood pressure (BP) collection

Lights-out or in-bed clock time from polysomnography

nsrr_begtimbd_f1 under Harmonized/Polysomnography/Sleep Architecture in CCSHS variables

Conventionally, this variable would be called the start of time in bed (TIB).Harmonized by the NSRR team. Source: :stloutp:

Sleep onset time from polysomnography

nsrr_begtimsp_f1 under Harmonized/Polysomnography/Sleep Architecture in CCSHS variables

Harmonized by the NSRR team. Source: :stonsetp:

Lights-on or out-bed clock time from polysomnography

nsrr_endtimbd_f1 under Harmonized/Polysomnography/Sleep Architecture in CCSHS variables

Conventionally, this variable would be called the end of time in bed (TIB).Harmonized by the NSRR team. Source: :stlonp:

Clock time when the participant is out of bed or lights are on from type I polysomnography

stlonp under Sleep Monitoring/Polysomnography/Sleep Architecture in CCSHS variables

Conventionally, this variable would be called the end of time in bed (TIB).

Clock time when the participant is in bed or lights are out from type I polysomnography

stloutp under Sleep Monitoring/Polysomnography/Sleep Architecture in CCSHS variables

Conventionally, this variable would be called the start of time in bed (TIB).

Sleep onset time from type I polysomnography

stonsetp under Sleep Monitoring/Polysomnography/Sleep Architecture in CCSHS variables

Self-reported bedtime (Weekday)

wd_bedtime under Sleep Questionnaires/Sleep Habits in CCSHS variables

Midpoint of time in bed from self report (Weekday)

wd_slpmid under Sleep Questionnaires/Sleep Habits in CCSHS variables

Calculated as the midpoint between self-reported weekday wake time and self-reported weekday bed time.

Self-reported wake time (Weekday)

wd_waketime under Sleep Questionnaires/Sleep Habits in CCSHS variables

Self-reported bedtime (Weekend)

we_bedtime under Sleep Questionnaires/Sleep Habits in CCSHS variables