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NSRR
SDNN - SHHS Variables
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Sleep Heart Health Study
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Variables
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You are viewing variable information that is kept around for historical purposes only. The latest version
v0.20.0
is
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v0.13.1
shhs
variables
HRV Analysis
sdnn
sdnn
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sdann
sdnnidx
Name
sdnn
Label
Standard deviation of all normal sinus to normal sinus interbeat (NN) intervals
Units
milliseconds
Type
numeric
Tags
heart rate variability
ms
Sleep Heart Health Study (SHHS) Visit Number vs Standard deviation of all normal sinus to normal sinus interbeat (NN) intervals
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 1
42,920
54.0
± 32.2
46.0
4.6
329.7
-
42,920
Interim Follow-up Visit
-
-
-
-
-
-
-
-
Visit 2
44,578
52.5
± 32.2
44.5
2.9
340.8
-
44,578
CVD Outcomes
-
-
-
-
-
-
-
-