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Study of Osteoporotic Fractures

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