1. A method for analyzing patient records, the method comprising: data mining, by a processor, a plurality of first patient records including unstructured data, the data mining using a domain knowledge base relating to a disease of interest and mining the unstructured data, the data mining comprising: mining from a plurality of different data sources for each of the first patient records, each of the first patient records being for a respective patient; for each of a plurality of variables for each patient, extracting different values from multiple of the different data sources such that multiple of the values are provided for each of the variables representing the patient at a same time; for each of the plurality of variables for each patient, assigning a probabilistic assertion to each of the values from the different data sources such that the multiple values for each variable are each assigned probability, resulting in different values and respective probabilistic assertions for each variable of the plurality of variables representing each patient; and for each of the plurality of variables for each patient, combining by inference the probabilities for each of the values from the different data sources into a unified probability for the respective variable, the unified probability providing a factoid representing a final value for the respective variable such that final values are provided for the respective variables for each patient; the mining resulting in a separate factoid for each variable of the plurality of variables, the separate factoids for the plurality of variables being provided by the mining for each of the patients from the different data sources; compiling, with the processor, the factoids into a plurality of structured patient records of a structured computerized patient record database and associated with patient variables for each of the patients, each structured patient record for respective patients comprising the factoids; and correlating, with a system, an outcome with the factoids associated with patient variables; wherein correlating comprises correlating the outcome from the factoids.