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LF - CHAT Variables
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Childhood Adenotonsillectomy Trial
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variables
HRV Analysis
lf
lf
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ihr
lf_hf
Name
lf
Label
Low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.04 and 0.15 Hz
Units
seconds squared
Type
numeric
Tags
heart rate variability
Visit Number vs Low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.04 and 0.15 Hz
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Baseline
45,072
0.002
± 0.002
0.0009
9.0,-07
0.09
-
45,072
Follow-up
40,073
0.002
± 0.002
0.0009
2.0,-06
0.05
-
40,073