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NSRR
SDANN - SHHS Variables
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Sleep Heart Health Study
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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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v0.10.1
shhs
variables
HRV Analysis
sdann
sdann
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History
rmssd
sdnn
Name
sdann
Label
Standard deviation of the averages of NN intervals in all 5-minute segments
Units
milliseconds
Type
numeric
SHHS Visit Number vs Standard deviation of the averages of NN intervals in all 5-minute segments
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 1
486
56.6
± 23.0
52.4
16.0
215.3
-
486
Interim Follow-up Visit
-
-
-
-
-
-
-
-
Visit 2
493
54.6
± 22.3
50.3
14.3
256.9
-
493
CVD Outcomes
-
-
-
-
-
-
-
-