covariance structure Ante-dependence covariance structure Orlaith Burke ANTE(1) Alejandra Gonzalez-Beltran Ante-dependence covariance structure is a covariance structure which specifies that the covariance between two time points is a function of the product of variances at both points (hence allowing hetrogenity of error variance across measures to affect the correlation) and the product of the correlations at the distances up to the one chosen. Camille Maumet Philippe Rocca-Serra Tom Nichols http://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#statug_mixed_sect019.htm metadata complete