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NSRR
ULF - SHHS Variables
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Variables
Old Version
You are viewing variable information that is kept around for historical purposes only. The latest version
v0.20.0
is
available here
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v0.11.0
shhs
variables
HRV Analysis
ulf
ulf
Overview
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Histogram
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History
tot_pwr
vlf
Name
ulf
Label
Ultra-low frequency power: the NN interval spectral power between 0 and 0.003 Hz
Units
milliseconds squared
Type
numeric
SHHS Visit Number vs Ultra-low frequency power: the NN interval spectral power between 0 and 0.003 Hz
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 1
486
4,038.4
± 3,477.4
3,221.3
282.3
45,976.7
-
486
Interim Follow-up Visit
-
-
-
-
-
-
-
-
Visit 2
493
3,788.8
± 3,097.5
2,908.1
229.1
31,032.3
-
493
CVD Outcomes
-
-
-
-
-
-
-
-