Computer system and method for de-identification of patient and/or individual health and/or medical related information, such as patient micro-data

A computer-implemented method de-identifies data collected for patients. IN at least one embodiment, the method comprises the sequential, non-sequential and/or sequence independent steps of providing information representative of at least one patient, at least one medical characteristic associated with at least one patient thereto, and a geographic area of the at least one patient, and providing at least one organizational structure for organizing medical characteristics. The method also includes associating the at least one organizational structure with at least one geographical area and at least one medical characteristic, and aggregating, in the at least one organizational structure, said information by medical characteristic and the at least one geographic area therein. Various alternative embodiments are additionally disclosed.