1. A method for summarizing an aggregate contribution to a characteristic for an individual, comprising: receiving at a processor, an indication of the characteristic to be evaluated and an indication of an individual to determine the aggregate contribution for, wherein the characteristic is phenotypic; identifying, using a processor, a plurality of markers associated with the characteristic; retrieving the measurement of the individual for each of the plurality of markers from a database of individuals' markers; retrieving a plurality of statistical factors that measure an association between the plurality of markers and the characteristics, including a joint or conditional association between a set of one or more of the plurality of markers and the characteristic; and determining the aggregate contribution to the characteristic of the individual based at least in part on the retrieved statistical factors; wherein the aggregate contribution is a probability or an odds ratio; outputting display characteristics to be displayed of the aggregate contribution to the characteristic of the individual.