Name

sdnn

Label

Standard deviation of all normal sinus to normal sinus interbeat (NN) intervals

Units
milliseconds
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs Standard deviation of all normal sinus to normal sinus interbeat (NN) intervals
N Mean StdDev Median Min Max Unknown Total
Visit 1 42,920 54.0 ± 32.2 46.0 4.6 329.7 - 42,920
Interim Follow-up Visit - - - - - - - -
Visit 2 44,578 52.5 ± 32.2 44.5 2.9 340.8 - 44,578
CVD Outcomes - - - - - - - -