Name
hf
Label
High frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.15 and 0.4 Hz
Units
milliseconds squared
Type
numeric
Sleep Heart Health Study (SHHS) Visit Number vs High frequency power: the normal sinus to normal sinus interbeat (NN) interval spectral power between 0.15 and 0.4 Hz
N Mean StdDev Median Min Max Unknown Total
Visit 1 486 687.6 ± 1,269.1 397.3 25.8 20,358.1 - 486
Interim Follow-up Visit - - - - - - - -
Visit 2 493 639.7 ± 997.1 372.9 3.3 9,287.1 - 493
CVD Outcomes - - - - - - - -