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Apnea, Bariatric surgery, and CPAP study

Name Label Folder
nsrrid
NSRR Subject Identifier
NSRR Subject Identifier

The National Sleep Research Resource (NSRR) subject identifier links the subject's data and files.

Administrative
rand_siteid
Site Identifier
Site Identifier

Recruitment site was a stratification factor for randomization.

Administrative
rand_treatmentarm
Randomized Treatment Arm
Randomized Treatment Arm Administrative
visitnumber
Visit number
Visit number Administrative
bmi
Body mass index (BMI)
Body mass index (BMI) Anthropometry
age
Age of participant
Age of participant Demographics
ethnicity
Hispanic or Latino ethnicity
Hispanic or Latino ethnicity Demographics
gender
Gender
Gender Demographics
race
Race
Race

Race is presented as three (3) categories based on suggested Biologic Specimen and Data Repository Information Coordinating Center (BioLINCC) de-identification procedures.

Demographics
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)
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)
pctlt90
Percent of sleep time where oxygen saturation was below 90%
Percent of sleep time where oxygen saturation was below 90% Polysomnography (PSG)
slpprdp
Total sleep time
Total sleep time Polysomnography (PSG)
daystomonth09
Days from baseline to 9-month visit
Days from baseline to 9-month visit Administrative
daystomonth18
Days from baseline to 18-month visit
Days from baseline to 18-month visit Administrative
daystosurgery
Days from baseline to laparoscopic gastric banding (LGB) surgery
Days from baseline to laparoscopic gastric banding (LGB) surgery Administrative
surgery_occurred
Surgery occurred
Surgery occurred

The subject underwent laparoscopic gastric banding (LGB) surgery.

Administrative
height
Height
Height Anthropometry
weight
Weight
Weight Anthropometry
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)
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)
ahi_c0h3
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep Polysomnography (PSG)
ahi_c0h3a
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 3% - number of [central apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep Polysomnography (PSG)
ahi_c0h4
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep Polysomnography (PSG)
ahi_c0h4a
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep Polysomnography (PSG)
ahi_o0h3
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation] per hour of sleep Polysomnography (PSG)
ahi_o0h3a
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >= 3% oxygen desaturation or arousal] per hour of sleep Polysomnography (PSG)
ahi_o0h4
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep Polysomnography (PSG)
ahi_o0h4a
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep
Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >= 4% oxygen desaturation or arousal] per hour of sleep Polysomnography (PSG)
cai_c0
Central Apnea Index (CAI) - number of central apneas per hour of sleep
Central Apnea Index (CAI) - number of central apneas per hour of sleep Polysomnography (PSG)
hi_h0
Hypopnea Index (HI) - number of hypopneas per hour of sleep
Hypopnea Index (HI) - number of hypopneas per hour of sleep Polysomnography (PSG)
oai_o0
Obstructive Apnea Index (OAI) - number of obstructive apneas per hour of sleep
Obstructive Apnea Index (OAI) - number of obstructive apneas per hour of sleep Polysomnography (PSG)
pctlt75
Percent of sleep time where oxygen saturation was below 75%
Percent of sleep time where oxygen saturation was below 75% Polysomnography (PSG)
pctlt80
Percent of sleep time where oxygen saturation was below 80%
Percent of sleep time where oxygen saturation was below 80% Polysomnography (PSG)
pctlt85
Percent of sleep time where oxygen saturation was below 85%
Percent of sleep time where oxygen saturation was below 85% Polysomnography (PSG)
timerem
Time spent in REM sleep
Time spent in REM sleep Polysomnography (PSG)
timeremp
Percent of sleep time spent in REM sleep
Percent of sleep time spent in REM sleep Polysomnography (PSG)
times34p
Percent of sleep time spent in stage 3-4 sleep
Percent of sleep time spent in stage 3-4 sleep Polysomnography (PSG)
timest1
Time spent in stage 1 sleep
Time spent in stage 1 sleep Polysomnography (PSG)
timest1p
Percent of sleep time spent in stage 1 sleep
Percent of sleep time spent in stage 1 sleep Polysomnography (PSG)
timest2
Time spent in stage 2 sleep
Time spent in stage 2 sleep Polysomnography (PSG)
timest2p
Percent of sleep time spent in stage 2 sleep
Percent of sleep time spent in stage 2 sleep Polysomnography (PSG)
timest34
Time spent in stage 3-4 sleep
Time spent in stage 3-4 sleep Polysomnography (PSG)