Beau Resting 

Estimated Breeding Values (EBVs)
for hip and elbow scores

Statistical model

A two trait (hip and elbow OFA score) mixed linear model was employed to estimate variance components (additive genetic variance and residual variance) and to predict estimated breeding values for each dog in the pedigree.  A total of 1,264,422 dogs from 74 breeds were evaluated for estimated breeding values from 760,455 OFA hip scores and 135,409 OFA elbow scores. Accuracy of the breeding value was indicated by R-Square: R2=Square root (1-prediction error variance/genetic variance).