v8folall v4hipg

Related Variables

v8folall Overall follow-up time since visit 8 Administrative
v4hipg Hip

This variable was collected at visit 4, a different timepoint than the 'Visit 8' sleep variables

 		Anthropometry
v4wais Waist

This variable was collected at visit 4, a different timepoint than the 'Visit 8' sleep variables

 		Anthropometry
v4wsthip Waist to hip ratio

This variable was collected at visit 4, a different timepoint than the 'Visit 8' sleep variables

 		Anthropometry
v1lbppls Pulse lying down

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

 		Clinical Data/Vital Signs
v1sbppls Pulse standing

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

 		Clinical Data/Vital Signs
v1lidias Diastolic blood pressure (DBP) lying down

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

 		Clinical Data/Vital Signs/Seated Blood Pressure
v1lisys Systolic blood pressure (SBP) lying down

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

 		Clinical Data/Vital Signs/Seated Blood Pressure
v1stddia Diastolic blood pressure (DBP) standing up

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

 		Clinical Data/Vital Signs/Seated Blood Pressure
v1stdsys Systolic blood pressure (SBP) standing up

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

 		Clinical Data/Vital Signs/Seated Blood Pressure
v8lbpdia Diastolic blood pressure (DBP) sitting down from Visit 8 Clinical Data/Vital Signs/Seated Blood Pressure
v8lbpsys Systolic blood pressure (SBP) sitting down from Visit 8 Clinical Data/Vital Signs/Seated Blood Pressure
v9sitdia Diastolic blood pressure (DBP) sitting down

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

 		Clinical Data/Vital Signs/Seated Blood Pressure
v9sitsys Systolic blood pressure (SBP) sitting down

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

 		Clinical Data/Vital Signs/Seated Blood Pressure
age_category Age (categorical)

Age categorized into: 74 and under, 75 to 84, or 85 and older. Source: :v8age: at Visit 8

 		Demographics
nsrr_bmi Body mass index (BMI)

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: "v8bmi: at Visit 8

 		Harmonized/Anthropometry
nsrr_bp_diastolic Diastolic blood pressure

Resting diastolic blood pressure from the upper arm. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :v8lbpdia: at Visit 8

 		Harmonized/Clinical Data
nsrr_bp_systolic Systolic blood pressure

Resting systolic blood pressure collected from the upper arm. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :v8lbpsys: at Visit 8

 		Harmonized/Clinical Data
nsrr_age Subject age

Participant ages greater than 89 have been recoded into 90 for de-identification purposes.

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :v8age: at Visit 8

 		Harmonized/Demographics
nsrr_age_gt89 Indicates whether the subject's age (in years) used during date obfuscation is greater than 89 years

All ages greater than 89 have been recoded to 90. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :v8age: at Visit 8

 		Harmonized/Demographics
nsrr_race Subject race

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :race: at Visit 8

 		Harmonized/Demographics
nsrr_current_smoker Currently smoking cigarettes

Indicates whether subject currently smokes cigarettes.

Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :v8smok: at Visit 8

 		Harmonized/Lifestyle and Behavioral Health
nsrr_ahi_hp3r_aasm15 Apnea-Hypopnea Index: (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction and >= 3% oxygen desaturation or with arousal) / hour of sleep

Harmonized by the NSRR team.

The definition for hypopneas is consistent with the following clinical guidelines: (1) American Academy of Sleep Medicine (AASM) 2007 Manual (2012 update) (recommended). Berry RB et al. 2012 (PubMed ID:23066376), and (2) American Academy of Sleep Medicine (AASM) 2015 (recommended) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.]

Refer to the source for detailed definition for respiratory events: :ahi_a0h3a: at Visit 8

 		Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_ahi_hp3u Apnea-Hypopnea Index: (All apneas + hypopneas with >= 3% oxygen desaturation) / hour of sleep

Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h3: at Visit 8

 		Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_ahi_hp4r Apnea-Hypopnea Index: (All apneas + hypopneas with >= 4% oxygen desaturation or with arousal) / hour of sleep

Harmonized by the NSRR team. Refer to the source for detailed definition for respiratory events: :ahi_a0h4a: at Visit 8

 		Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_ahi_hp4u_aasm15 Apnea-Hypopnea Index: (All apneas + hypopneas with >=30% nasal cannula [or alternative sensor] reduction with >= 4% oxygen desaturation) / hour of sleep

Harmonized by the NSRR team.

The definition of hypopnea events is consistent with the following clinical guidelines: (1) AASM 2012 update (alternative) Berry RB et al. 2012 (PubMed ID:23066376), and (2) AASM 2015 (acceptable) [Berry RB et al. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications, Version 2.2. American Academy of Sleep Medicine, Darien, IL, 2015.].

Refer to the source for detailed definition for respiratory events: :ahi_a0h4: at Visit 8

 		Harmonized/Polysomnography/Apnea-Hypopnea Indices
nsrr_phrnumar_f1 Arousal Index: Number of arousals per hour of sleep from polysomnography

Harmonized by the NSRR team. Source: :ai_all: at Visit 8

 		Harmonized/Polysomnography/Arousal
nsrr_flag_spsw Study scored sleep/wake rather than with full sleep staging if there is not sufficient quality on EEG lead. Studies scored as sleep wake have all sleep stages scored using a default of Stage 2 and no arousals are scored.

Harmonized by the NSRR team. Source: :slewake: at Visit 8

 		Harmonized/Polysomnography/Signal Quality
nsrr_pctdursp_s1 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 1 (N1) from polysomnography

Harmonized by the NSRR team. Source: :tmstg1p: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_pctdursp_s2 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 (N2) from polysomnography

Harmonized by the NSRR team. Source: :tmstg2p: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_pctdursp_s3 Percentage of total sleep duration (i.e., total sleep time, TST) in stage 3/4 (N3) from polysomnography

Harmonized by the NSRR team. Source: :tmstg34p: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_pctdursp_sr Percentage of total sleep duration (i.e., total sleep time, TST) in REM from polysomnography

Harmonized by the NSRR team. Source: :tmremp: at Visit 8

 		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

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: :slpprdp: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_ttldursp_s1s4 REM Sleep Latency: the interval between the first sleep epoch and REM sleep excluding wake

Harmonized by the NSRR team. Source: :remlaiip: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_ttleffsp_f1 Sleep Efficiency: the ratio of sleep duration (i.e., total sleep time, TST) to in-bed period frompolysomnography

Harmonized by the NSRR team. Source: :slp_eff: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_ttllatsp_f1 Sleep Latency: the interval between lights-out/in-bed time and sleep onset time from polysomnography

Harmonized by the NSRR team. Source: :slplatp: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_ttlprdbd_f1 Total period of bed (i.e., time in bed) from polysomnography

Harmonized by the NSRR team. Source: :timebedp: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
nsrr_ttlprdsp_s1sr REM Sleep Latency: the interval between the first sleep epoch and REM sleep including wake

Harmonized by the NSRR team. Source: :remlaip: at Visit 8

 		Harmonized/Polysomnography/Sleep Architecture
v1drink In the past 12 months, have you had at least one drink of any kind of alcoholic beverage?

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

 		Lifestyle and Behavioral Health
v1drwka Drinks per week adjusted for atypical drinking

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

 		Lifestyle and Behavioral Health
v1diabcl Diabetes with insulin info

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

 		Medical History
v1hyten Hypertension status

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.

 		Medical History
v2echf Has a doctor ever told you that you have congestive heart failure (CHF)?

This variable was collected at visit 2, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v2enghrt Has a doctor ever told you that you have an enlarged heart?

This variable was collected at visit 2, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v4ekg Has a doctor ever told you that you have an abnormal EKG, ECG, or electrocardiogram?

This variable was collected at visit 4, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v4hrtdtx Are you currently being treated for this condition by a doctor?

This variable was collected at visit 4, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v4seiz Has a doctor ever told you that you have seizures (fits or convulsions)?

This variable was collected at visit 4, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v5scancr In the last two years, has a doctor told you that you have cancer?

This variable was collected at visit 5, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6sangin Has a doctor or other health care provider ever told you that you had angina?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6scong Has a doctor or other health care provider ever told you that you have congestive heart failure (CHF), enlarged heart?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6scopd Has a doctor or other health care provider ever told you that you have chronic obstructive lung disease (COPD), chronic bronchitis, asthma, emphysema?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6sdepr Has a doctor or other health care provider ever told you that you have depression?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6sdiab Has a doctor or other health care provider ever told you that you have diabetes?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6sheart Has a doctor or other health care provider ever told you that you had a heart attack, coronary, or myocardial infarction (MI)?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6shyper Has a doctor or other health care provider ever told you that you have high blood pressure?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6sohrt Has a doctor or other health care provider ever told you that you have other heart disease?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v6sstrk Has a doctor or other health care provider ever told you that you had a stroke?

This variable was collected at visit 6, a different timepoint than the 'Visit 8' sleep variables

 		Medical History
v9eangio Blockage of the coronary arteries requiring angioplasty or stenting procedure?

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

 		Medical History
v9epervd Peripheral vascular disease (PVD) (intermittent claudication or pain in your legs from a blockage of the arteries)?

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

 		Medical History