systolic - Search - Sleep Data - National Sleep Research Resource

Minimum systolic pressure while awake

syswakemin under Clinical Data/Vital Signs/Ambulatory Blood Pressure in HEARTBEAT variables

Standard deviation of systolic pressure while awake

syswakesd under Clinical Data/Vital Signs/Ambulatory Blood Pressure in HEARTBEAT variables

Mean of systolic readings with valid wake

syswakevalid under Clinical Data/Vital Signs/Ambulatory Blood Pressure in HEARTBEAT variables

First systolic blood pressure measurement

sysbp1 under Clinical Data/Vital Signs/Seated Blood Pressure in HEARTBEAT variables

Second systolic blood pressure measurement

sysbp2 under Clinical Data/Vital Signs/Seated Blood Pressure in HEARTBEAT variables

Third systolic blood pressure measurement

sysbp3 under Clinical Data/Vital Signs/Seated Blood Pressure in HEARTBEAT variables

Systolic blood pressure mean (3 measurements)

sysmean under Clinical Data/Vital Signs/Seated Blood Pressure in HEARTBEAT variables

Difference between date of systolic and diastolic blood pressure measurements and sleep test

bp_offset under Clinical Data/Vital Signs/Seated Blood Pressure in NCHSDB variables

Derived using dates from the MEASUREMENT.CSV and SLEEP_STUDY.CSV data files.

Apical 4 chamber view: Right ventricular end-systolic area (RV - ESA)

a4crvesa under Clinical Data/Diagnostic Studies/Echocardiography in BESTAIR variables

Parasternal long axis view: Left ventricular end-systolic diameter (LV - ESD)

lvesd under Clinical Data/Diagnostic Studies/Echocardiography in BESTAIR variables

End-systolic volume (ESV)

lvesv under Clinical Data/Diagnostic Studies/Echocardiography in BESTAIR variables

Weighted average of systolic blood pressure (SBP)

bp24sbpweight under Clinical Data/Vital Signs/Ambulatory Blood Pressure in BESTAIR variables

Presence of systolic blood pressure (SBP) dipping

sysnondipping under Clinical Data/Vital Signs/Ambulatory Blood Pressure in BESTAIR variables

Average seated systolic blood pressure (SBP)

avgseatedsystolic under Clinical Data/Vital Signs/Seated Blood Pressure in BESTAIR variables

Hypertension at the Sueno visit as derived from the SOL diagnosis and Sueno hypertension variables

hypertension_sueno under Clinical Data/Incident Outcomes in HCHS variables

Hypertension is defined here if the systolic or diastolic blood pressure is greater than or equal to 140/90 or if the participant is currently taking antihypertensive medications.

Average seated systolic blood pressure based on three measurements at a single clinic visit, with an interval of 30 seconds between each measurement

sbpa5 under Clinical Data/Vital Signs/Seated Blood Pressure in HCHS variables

Control of Hypertension - NHANES

hypert_control under Medical History in HCHS variables

This variable is defined for participants whose blood pressure are below the cutoff of 140/90 (both systolic and diastolic must be less than the cutoff values) for those who were defined as having hypertension using the NHANES definition only and also indicated whether or not they were receiving treatment for hypertension.

Hypertension (BP>=140/90 and Med Use)

hypertension under Medical History in HCHS variables

Hypertension is defined here if the systolic or diastolic blood pressure is greater than or equal to 140/90 or if the participant is currently taking antihypertensive medications.

Hypertension using NHANES definition

hypertension2 under Medical History in HCHS variables

Hypertension is defined here using the following NHANES definition: if the systolic or diastolic blood pressure is greater than or equal to 140/90 or if the participant self-reported as currently taking antihypertensive medications.

Systolic blood pressure (SBP) lying down

v1lisys under Clinical Data/Vital Signs/Seated Blood Pressure in SOF variables

This variable was collected at visit 1, a different timepoint than the 'Visit 8' sleep variables

Systolic blood pressure (SBP) standing up

v1stdsys under Clinical Data/Vital Signs/Seated Blood Pressure in SOF variables

This variable was collected at visit 1, a different timepoint than the 'Visit 8' sleep variables

Systolic blood pressure (SBP) sitting down from Visit 8

v8lbpsys under Clinical Data/Vital Signs/Seated Blood Pressure in SOF variables

Systolic blood pressure (SBP) sitting down

v9sitsys under Clinical Data/Vital Signs/Seated Blood Pressure in SOF variables

This variable was collected at visit 9, a different timepoint than the 'Visit 8' sleep variables

Hypertension status

v1hyten under Medical History in SOF variables

Defined by systolic blood pressure > 160, diastolic blood pressure > 90, or use of thiazides. This variable was collected at visit 1, a different timepoint than the 'Visit 8' sleep variables.

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.