Patent ID: 8170889

Claim:
A computer implemented method of evaluating interaction of two or more medical products or conditions, in the context of a reference condition, based on a dataset of patient records, comprising: developing a reference contingency lattice of reference lattice subsets from a subset of the patient records containing the reference condition, wherein each reference lattice subset corresponds to the patient records that contain the reference condition and that contain a respective medical product or condition, or combination of medical products or conditions, of the two or more medical products or conditions; developing a plurality of comparison contingency lattices, each of the comparison contingency lattices developed from a respective random subset of the patient records not containing the reference condition, wherein each of the respective random subsets is of a same size as the subset of patient records containing the reference condition, and wherein each of the comparison contingency lattices includes comparison lattice subsets, wherein each comparison lattice subset is associated with a respective reference lattice subset and corresponds to the patient records containing the respective medical product or condition, or combination of medical products or conditions, of the associated reference lattice subset; and comparing, via a processor, the reference lattice subsets of the reference contingency lattice to the associated comparison lattice subsets of the comparison contingency lattices to determine a difference in one of the reference lattice subsets of the reference contingency lattice from the associated comparison lattice subsets of the comparison contingency lattices, wherein the difference is indicative of an interaction between the medical products or conditions with respect to the reference condition.