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NSRR
LF_HF - SHHS Variables
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Sleep Heart Health Study
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Variables
v0.20.0
shhs
variables
Clinical Data
Diagnostic Studies
Heart Rate Variability
lf_hf
lf_hf
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lf
lf_n
Name
lf_hf
Label
The ratio of low to high frequency power
Type
numeric
Tags
heart rate variability
Sleep Heart Health Study (SHHS) Visit Number vs The ratio of low to high frequency power
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Visit 1
42,920
3.2
± 3.3
2.2
0.04
47.7
-
42,920
Interim Follow-up Visit
-
-
-
-
-
-
-
-
Visit 2
44,578
3.2
± 3.6
2.1
0.03
69.7
-
44,578
CVD Outcomes
-
-
-
-
-
-
-
-