Name

sdnnidx

Label

Mean of the standard deviations of normal sinus to normal sinus interbeat (NN) intervals in all 5-minute segments

Units
milliseconds
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Mean of the standard deviations of normal sinus to normal sinus interbeat (NN) intervals in all 5-minute segments
N Mean StdDev Median Min Max Unknown Total
Visit 1 486 53.9 ± 21.7 50.6 13.9 191.9 - 486
Interim Follow-up Visit - - - - - - - -
Visit 2 493 52.1 ± 21.4 48.3 6.2 187.3 - 493
CVD Outcomes - - - - - - - -