sdnn sleepstage01
Name
sdnnidx
Label
Mean of the standard deviations of NN intervals in all 5-minute segments
Units
seconds
Type
numeric
Visit Number vs Mean of the standard deviations of NN intervals in all 5-minute segments
N Mean StdDev Median Min Max Unknown Total
Baseline 45,073 0.08 ± 0.04 0.08 0.005 0.5 - 45,073
Follow-up 40,224 0.08 ± 0.04 0.07 0.004 0.3 - 40,224