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NSRR
SDNNIDX - 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
sdnnidx
sdnnidx
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History
sdnn
sleepstage01
Name
sdnnidx
Label
Mean of the standard deviations of NN intervals in all 5-minute segments
Units
milliseconds
Type
numeric
SHHS Visit Number vs Mean of the standard deviations of NN intervals in all 5-minute segments
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 1
486
53.9
± 21.7
50.6
13.9
191.9
-
486
Interim Follow-up Visit
-
-
-
-
-
-
-
-
Visit 2
493
52.1
± 21.4
48.3
6.2
187.3
-
493
CVD Outcomes
-
-
-
-
-
-
-
-