1. A method on a computer system of producing statistical analysis of medical care information utilizing medical care provider efficiency measurements comprising: aggregating medical care information at a medical care provider level on the computer system for a plurality of medical care providers; and computing a statistical analysis utilizing a correlation analysis to identify indicators of a correlation between medical care information and medical care provider efficiency measurements on the computer system comprising: associating a metric for each of a plurality of sets of codes, the metrics for the plurality of sets of codes obtained from the medical care information aggregated at the medical care provider level for each of the plurality of medical care providers, wherein: each of the sets of codes in the plurality of sets of codes comprises at least one code from a group of codes consisting of procedure codes and service codes in the medical care field, and the metric for each of the plurality of sets of codes includes at least one of utilization and cost, associating an efficiency metric from the medical care provider efficiency measurements with each of the plurality of medical care providers, calculating a correlation value for each of the plurality of medical care providers between: the efficiency metric associated with each of the plurality of medical care providers and a metric value associated with each of the plurality of sets of codes, resulting in a correlation value indicating correlation between the metric associated with each of the plurality of sets of codes and the efficiency metrics for the plurality of providers, and selecting a subset of sets of codes from the plurality of sets of codes as the indicators based on the correlation values calculated for the metric associated with each of the plurality of sets of codes, wherein the selected subset of sets of codes includes at least one set of codes from the plurality of sets of codes.