A medical data system and method of using same are provided. The medical data system includes a computing platform for using patient-specific data from each of a plurality of patients at various time points to generate a multi-dimensional vector for each of the plurality of patients at each time point of the various time points, thereby providing a plurality of time-related multi-dimensional indices for each patient. The system further uses a multi-dimensional vector generated from data at time T1 of a subject to group the subject with a first cohort of patients and a multi-dimensional vector generated from data at time T2 of the subject to group the subject with a second cohort of patients.
