Collection and analysis of information concerning heart failure

摘要

A method of handling information relating to cardiac condition which includes selecting a cross-correlation frequency having an associated cross-correlation period, detecting and binning a heart rate in a heart rate bin, detecting and binning an activity state in an activity state bin, then repeating the detecting and binning a heart rate and the detecting and binning an activity state during a cross-correlation period. The products of the bin count of the heart rate bins and the bin count of the activity state bins are summed to provide a cross-correlation index for the cross-correlation period.