Related Variables
gimstat |
Baseline Marital Status
Note: The baseline visit occurred before the sleep visits (VS1 and VS2). Marital status may have changed between visits. |
Demographics | |
vs2age1 |
Age at Sleep Visit 2
All ages greater than 89 have been recoded to 90 |
Demographics | |
vsage1 |
Age at Sleep Visit 1
All ages greater than 89 have been recoded to 90 |
Demographics | |
nsrr_bmi |
Body mass index (BMI)
Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :hwbmi: at Visit 1 |
Harmonized/Anthropometry | |
nsrr_bp_diastolic |
Diastolic blood pressure
Average resting diastolic blood pressure of two measurements collected from the upper arm in a single clinic visit. |
Harmonized/Clinical Data | |
nsrr_bp_systolic |
Systolic blood pressure
Average resting systolic blood pressure of two measurements collected from the upper arm in a single clinic visit. |
Harmonized/Clinical Data | |
nsrr_age |
Subject age
All ages greater than 89 have been recoded to 90. Harmonized by the NSRR team to align with TOPMed and BioDataCatalyst standards. Source: :vsage1: at Visit 1 |
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: :vsage1: at Visit 1 |
Harmonized/Demographics | |
nsrr_current_smoker |
Currently smoking cigarettes
Indicates whether subject currently smokes cigarettes. |
Harmonized/Lifestyle and Behavioral Health | |
nsrr_ever_smoker |
Ever smoked cigarettes
Indicates whether subject ever regularly smoked cigarettes. |
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. |
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: :poahi3: at Visit 1 |
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: :poahi4a: at Visit 1 |
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. |
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: :poai_all: at Visit 1 |
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: :poprstag: at Visit 1 |
Harmonized/Polysomnography/Signal Quality | |
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/Polysomnography/Sleep Architecture | |
podaysvs | Days sleep visit 1 to start of psg recording | Sleep Monitoring/Polysomnography/Adminstrative |