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ULF - CHAT Variables
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Childhood Adenotonsillectomy Trial
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Variables
v0.14.0
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variables
Clinical Data
Diagnostic Studies
Heart Rate Variability
ulf
ulf
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tot_pwr
vlf
Name
ulf
Label
Ultra-low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0 and 0.003 Hz
Units
seconds squared (s2)
Type
numeric
Visit Number vs Ultra-low frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0 and 0.003 Hz
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Baseline
451
0.003
± 0.003
0.003
0.0005
0.04
-
451
Follow-up
406
0.003
± 0.002
0.003
0.0004
0.01
-
406