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NSRR
PNN20 - 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
pnn20
pnn20
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pnn10
pnn30
Name
pnn20
Label
Percentage of differences between adjacent normal sinus to normal sinus interbeat (NN) intervals that are >20 ms
Type
numeric
Visit Number vs Percentage of differences between adjacent normal sinus to normal sinus interbeat (NN) intervals that are >20 ms
N
Mean
StdDev
Median
Min
Max
Unknown
Total
Baseline
45,072
0.6
± 0.2
0.6
0.0
1.0
-
45,072
Follow-up
40,073
0.6
± 0.2
0.7
0.0
1.0
-
40,073