Name	Label	Folder
gender Gender	Gender	Administrative
sofid Study of Osteoporotic Fractures (SOF) Public Data Release ID	Study of Osteoporotic Fractures (SOF) Public Data Release ID The identifier used to link SOF datasets and polysomnography files.	Administrative
ai_all Arousal Index	Arousal Index Total number of arousals per hour of sleep. Ratio of count of arousals to total sleep time in hours.	Polysomnography (PSG)/Arousals
avgsat Average oxygen saturation (SaO2) in sleep	Average oxygen saturation (SaO2) in sleep	Polysomnography (PSG)/Oxygen Saturation (SaO2)
minsat Minimum oxygen saturation (SaO2) in sleep	Minimum oxygen saturation (SaO2) in sleep Lowest oxygen saturation (SaO2)% during sleep	Polysomnography (PSG)/Oxygen Saturation (SaO2)
longap Longest apnea	Longest apnea	Polysomnography (PSG)/Respiratory Events/Apnea
oavgdur Average obstructive apnea length, entire recording	Average obstructive apnea length, entire recording	Polysomnography (PSG)/Respiratory Events/Apnea/Obstructive
longhyp Longest hypopnea, entire recording	Longest hypopnea, entire recording	Polysomnography (PSG)/Respiratory Events/Hypopnea
ahi_a0h3 Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep	Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h3a Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h4 Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep	Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_a0h4a Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h3 Central Apnea-Hypopnea Index (CAHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep	Central Apnea-Hypopnea Index (CAHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h3a Central Apnea-Hypopnea Index (CAHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Central Apnea-Hypopnea Index (CAHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h4 Central Apnea-Hypopnea Index (CAHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep	Central Apnea-Hypopnea Index (CAHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_c0h4a Central Apnea-Hypopnea Index (CAHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Central Apnea-Hypopnea Index (CAHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h3 Obstructive Apnea-Hypopnea Index (OAHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep	Obstructive Apnea-Hypopnea Index (OAHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h3a Obstructive Apnea-Hypopnea Index (OAHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Obstructive Apnea-Hypopnea Index (OAHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h4 Obstructive Apnea-Hypopnea Index (OAHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep	Obstructive Apnea-Hypopnea Index (OAHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
ahi_o0h4a Obstructive Apnea-Hypopnea Index (OAHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Obstructive Apnea-Hypopnea Index (OAHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep	Polysomnography (PSG)/Respiratory Events/Indexes
cai0p Central Apnea Index (CAI) all oxygen desaturations	Central Apnea Index (CAI) all oxygen desaturations	Polysomnography (PSG)/Respiratory Events/Indexes
oai0p Obstructive Apnea Index (OAI) all oxygen desaturations	Obstructive Apnea Index (OAI) all oxygen desaturations	Polysomnography (PSG)/Respiratory Events/Indexes
rdi0p Overall Respiratory Disturbance Index (RDI) all oxygen desaturations	Overall Respiratory Disturbance Index (RDI) all oxygen desaturations	Polysomnography (PSG)/Respiratory Events/Indexes
rdi3p Overall Respiratory Disturbance Index (RDI) at >= 3% oxygen desaturation	Overall Respiratory Disturbance Index (RDI) at >= 3% oxygen desaturation [(total number of apneas and hypopneas associated with >= 3% oxygen desaturation) / (hours of sleep)]	Polysomnography (PSG)/Respiratory Events/Indexes
rdi3pa Overall Respiratory Disturbance Index (RDI) at >= 3% oxygen desaturation or arousal	Overall Respiratory Disturbance Index (RDI) at >= 3% oxygen desaturation or arousal [(total number of apneas and hypopneas with >= 3% oxygen desaturation or arousal) / (hours of sleep)]	Polysomnography (PSG)/Respiratory Events/Indexes
rdi4p Overall Respiratory Disturbance Index (RDI) at >= 4% oxygen desaturation	Overall Respiratory Disturbance Index (RDI) at >= 4% oxygen desaturation Ratio of the count of all apneas (central and obstructive) and hypopneas associated with at least a >= 4% oxygen desaturation to the total sleep time expressed in hours	Polysomnography (PSG)/Respiratory Events/Indexes
overall Overall study grade	Overall study grade	Polysomnography (PSG)/Signal Quality
oximdur Hours of usable oximetry	Hours of usable oximetry	Polysomnography (PSG)/Signal Quality
quoxim Quality of oximetry	Quality of oximetry	Polysomnography (PSG)/Signal Quality
slp_eff Sleep Efficiency	Sleep Efficiency Percentage of time in bed that was spent sleeping, or the ratio of total sleep time to total time in bed, expressed as a percentage.	Polysomnography (PSG)/Sleep Architecture
slpprdp Total sleep time	Total sleep time	Polysomnography (PSG)/Sleep Architecture
slptime Total sleep time	Total sleep time	Polysomnography (PSG)/Sleep Architecture
noplm Number of periodic limb movements (PLMs) during sleep	Number of periodic limb movements (PLMs) during sleep	Polysomnography (PSG)/Sleep Events
plmaslp Total number of periodic limb movements (PLMs) with arousal (in all sleep)	Total number of periodic limb movements (PLMs) with arousal (in all sleep)	Polysomnography (PSG)/Sleep Events/Limb Movements
posn Position sensor working	Position sensor working 1=Position sensor working	Polysomnography (PSG)/Sleep Events/Limb Movements
age_category Age (categorical)	Age (categorical)	Administrative
race Race	Race	Administrative
v8age Age of participant	Age of participant Participant ages greater than 89 have been recoded into 90 for de-identification purposes.	Administrative
v8folall Overall follow-up time since visit 8	Overall follow-up time since visit 8	Administrative
visit Visit number	Visit number The Study of Osteoporotic Fractures (SOF) Visit where the data were collected/derived.	Administrative
v4hipg Hip	Hip This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Anthropometry
v4wais Waist	Waist This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Anthropometry
v4wsthip Waist to hip ratio	Waist to hip ratio This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Anthropometry
v8bmi Body Mass Index (BMI)	Body Mass Index (BMI)	Anthropometry
v8hght Height	Height	Anthropometry
v8wght Weight	Weight	Anthropometry
v1lbppls Pulse lying down	Pulse lying down This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v1lidias Diastolic blood pressure (DBP) lying down	Diastolic blood pressure (DBP) lying down This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v1lisys Systolic blood pressure (SBP) lying down	Systolic blood pressure (SBP) lying down This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v1sbppls Pulse standing	Pulse standing This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v1stddia Diastolic blood pressure (DBP) standing up	Diastolic blood pressure (DBP) standing up This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v1stdsys Systolic blood pressure (SBP) standing up	Systolic blood pressure (SBP) standing up This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v8ppls Average pulse	Average pulse	Blood Pressure (BP)
v9sitdia Diastolic blood pressure (DBP) sitting down	Diastolic blood pressure (DBP) sitting down This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v9sitsys Systolic blood pressure (SBP) sitting down	Systolic blood pressure (SBP) sitting down This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Blood Pressure (BP)
v8brstca Indicators of occurrence of breast cancer	Indicators of occurrence of breast cancer	Endpoints
v8dthash Atherosclerosis cardio death	Atherosclerosis cardio death	Endpoints
v8dthchd Ischemic heart disease (IHD) death	Ischemic heart disease (IHD) death	Endpoints
v8dthstk Stroke death	Stroke death	Endpoints
v8dthsud Ischemic heart disease (IHD) and sudden death	Ischemic heart disease (IHD) and sudden death	Endpoints
v1diabcl Diabetes with insulin info	Diabetes with insulin info This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Lifestyle
v1drink In the past 12 months, have you had at least one drink of any kind of alcoholic beverage?	In the past 12 months, have you had at least one drink of any kind of alcoholic beverage? This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Lifestyle
v1drwka Drinks per week adjusted for atypical drinking	Drinks per week adjusted for atypical drinking This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Lifestyle
v8dr30 During the last 30 days, have you had at least one drink of any kind of alcoholic beverage? (Including beer, wine, or mixed drinks such as martinis or manhattans.)	During the last 30 days, have you had at least one drink of any kind of alcoholic beverage? (Including beer, wine, or mixed drinks such as martinis or manhattans.)	Lifestyle
v8drwk30 Which one of these statements comes closest to describing how often you drank any alcoholic beverages in the last 30 days?	Which one of these statements comes closest to describing how often you drank any alcoholic beverages in the last 30 days?	Lifestyle
v8smok Do you currently smoke cigarettes?	Do you currently smoke cigarettes?	Lifestyle
v1hyten Hypertension status	Hypertension status Defined by systolic blood pressure > 160, diastolic blood pressure > 90, or use of thiazides. This variable was collected at 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)?	Has a doctor ever told you that you have congestive heart failure (CHF)? This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Medical History
v2enghrt Has a doctor ever told you that you have an enlarged heart?	Has a doctor ever told you that you have an enlarged heart? This variable was collected at 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?	Has a doctor ever told you that you have an abnormal EKG, ECG, or electrocardiogram? This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Medical History
v4hrtdtx Are you currently being treated for this condition by a doctor?	Are you currently being treated for this condition by a doctor? This variable was collected at 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)?	Has a doctor ever told you that you have seizures (fits or convulsions)? This variable was collected at 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?	In the last two years, has a doctor told you that you have cancer? This variable was collected at 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?	Has a doctor or other health care provider ever told you that you had angina? This variable was collected at 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?	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 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?	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 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?	Has a doctor or other health care provider ever told you that you have depression? This variable was collected at 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?	Has a doctor or other health care provider ever told you that you have diabetes? This variable was collected at 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)?	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 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?	Has a doctor or other health care provider ever told you that you have high blood pressure? This variable was collected at 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?	Has a doctor or other health care provider ever told you that you have other heart disease? This variable was collected at 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?	Has a doctor or other health care provider ever told you that you had a stroke? This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Medical History
v8ecancr Has a doctor or other health care provider ever told you that you have cancer?	Has a doctor or other health care provider ever told you that you have cancer?	Medical History
v8ecc Has a doctor or other health care provider ever told you that you have colon cancer?	Has a doctor or other health care provider ever told you that you have colon cancer?	Medical History
v8econg Has a doctor or other health care provider ever told you that you have congestive heart failure (CHF), enlarged heart?	Has a doctor or other health care provider ever told you that you have congestive heart failure (CHF), enlarged heart?	Medical History
v8ecopd Has a doctor or other health care provider ever told you that you have chronic obstructive lung disease (COPD), chronic bronchitis, asthma, emphysema?	Has a doctor or other health care provider ever told you that you have chronic obstructive lung disease (COPD), chronic bronchitis, asthma, emphysema?	Medical History
v8edepr Has a doctor or other health care provider ever told you that you have depression?	Has a doctor or other health care provider ever told you that you have depression?	Medical History
v8ediab Has a doctor or other health care provider ever told you that you have diabetes?	Has a doctor or other health care provider ever told you that you have diabetes?	Medical History
v8eheart Has a doctor or other health care provider ever told you that you had a heart attack, coronary, or myocardial infarction (MI)?	Has a doctor or other health care provider ever told you that you had a heart attack, coronary, or myocardial infarction (MI)?	Medical History
v8ehyper Has a doctor or other health care provider ever told you that you have high blood pressure?	Has a doctor or other health care provider ever told you that you have high blood pressure?	Medical History
v8eohrt Has a doctor or other health care provider ever told you that you have other heart disease?	Has a doctor or other health care provider ever told you that you have other heart disease?	Medical History
v8estrk Has a doctor or other health care provider ever told you that you had a stroke?	Has a doctor or other health care provider ever told you that you had a stroke?	Medical History
v9eangio Blockage of the coronary arteries requiring angioplasty or stenting procedure?	Blockage of the coronary arteries requiring angioplasty or stenting procedure? This variable was collected at 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)?	Peripheral vascular disease (PVD) (intermittent claudication or pain in your legs from a blockage of the arteries)? This variable was collected at a different timepoint than the 'Visit 8' sleep variables	Medical History
datalost Was any data lost?	Was any data lost?	Polysomnography (PSG)/Administrative
lighoff Participant reported time to bed	Participant reported time to bed 24-hour clock time written as integer (e.g. 0-2359).	Polysomnography (PSG)/Administrative
npflow Flow limitation	Flow limitation 1=flow limitation observed	Polysomnography (PSG)/Administrative
outlier Were outliers found (real)	Were outliers found (real)	Polysomnography (PSG)/Administrative
sclonp Lights on - end of study set by scorer	Lights on - end of study set by scorer	Polysomnography (PSG)/Administrative
scloutp Lights on set by scorer	Lights on set by scorer	Polysomnography (PSG)/Administrative

Study of Osteoporotic Fractures