1. A system for determining overall efficacy of a surgical procedure, a medical treatment or a drug comprising: an interface module, executing on a computer, for obtaining, over a period of time, incoming disparate medical data relating to a patient who has undergone the surgical procedure, undergone the medical treatment or taken the drug; a storage module, executing on a computer, for storing historical medical data relating to the patient; a collection module, executing on a computer, for collecting the incoming disparate medical data from the interface module and for collecting the historical medical data relating to the patient from the storage module; a transformation module, executing on a computer, for transforming each of the incoming disparate medical data collected at a single point in time into a transformed numerical quantity health score value, wherein each of the transformed numerical quantity health score values are in a format for combining together; a combination module, executing on a computer, for combining each of the transformed numerical quantity health score values into a single health score, the single health score representing the health of the patient at the single point in time at which the incoming disparate medical data was collected; and a presentation and comparison module, executing on a computer, for continually plotting and displaying on a health score plot single health scores that have been calculated for the patient as a function of time, wherein each of the single health scores displayed at a given point in time are recalculated using any new incoming disparate medical data, wherein, based on the values of the single health scores displayed on the health score plot, the overall efficacy of the surgical procedure, the medical treatment or the drug can be determined.