1. A method, comprising: receiving a global outcome value, wherein the global outcome value is a global threshold for identifying a plurality of subsets of data attributes; calculating, in parallel, a plurality of subset outcome values for the plurality of subsets of data attributes, respectively, of a plurality of data attributes, wherein each subset outcome value of a subset of data attributes represents an average value of a data attribute outcome for members that are associated with each of the data attributes of the subset of data attributes; comparing, for each subset of data attributes, a number of members associated with the subset of data attributes with a size threshold; removing each subset of data attributes for which the number of members associated with the subset is below the size threshold; comparing, for each subset of data attributes, the subset outcome value for the subset with the global outcome value as the global threshold for identifying a plurality of subsets of data attributes; and generating a report that identifies each subset of data attributes for which the corresponding subset outcome value is greater by a first threshold than or less by a second threshold than the global outcome value.