rmssd sdnn
Name
sdann
Label
Standard deviation of the averages of NN intervals in all 5-minute segments
Units
seconds
Type
numeric
Visit Number vs Standard deviation of the averages of NN intervals in all 5-minute segments
N Mean StdDev Median Min Max Unknown Total
Baseline 451 0.06 ± 0.03 0.05 0.02 0.2 - 451
Follow-up 407 0.05 ± 0.02 0.05 0.02 0.2 - 407