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NSRR
BMI_OFFSET - NCHSDB Variables
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v0.3.0
nchsdb
variables
Anthropometry
bmi_offset
bmi_offset
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bmi
bmipct
Name
bmi_offset
Label
Difference between date of body mass index (BMI) measurement and sleep test
Description
Derived using dates from the MEASUREMENT.CSV and SLEEP_STUDY.CSV data files.
Units
days
Type
numeric
Encounter number vs Difference between date of body mass index (BMI) measurement and sleep test
N
Mean
StdDev
Median
Min
Max
Unknown
Total
First overnight sleep study
3,660
-3.2
± 69.1
0.009
-2,629.2
202.7
13
3,673
Second overnight sleep study
273
-1.2
± 17.8
0.002
-235.4
43.9
-
273
Third overnight sleep study
35
-1.0
± 5.4
0.04
-31.2
1.6
-
35
Fourth overnight sleep study
2
0.04
± 0.06
0.04
-0.004
0.08
-
2
Fifth overnight sleep study
1
0.01
-
0.01
0.01
0.01
-
1