Qm. He et al., THE POWER OF ITERATED GENERALIZED LEAST-SQUARES (GLS) METHOD TO DETECT DIRECT RELATIONSHIPS IN THE ANALYSIS OF CORRELATED QUANTITATIVE TRAITS, Genetic epidemiology, 14(6), 1997, pp. 797-801
We examined the power of the stepwise iterated generalized least squar
es (GLS) method by modeling the relationship between quantitative trai
ts and other variables using the simulated data for Problem 2A. The co
mparison between the generating model provided by the workshop and the
results of the stepwise iterated GLS model showed that this method co
uld be used as a first step in identifying the underlying model for ge
netic data. The estimated covariance matrices also provide useful info
rmation about the genetic properties of the traits. (C) 1997 Wiley-Lis
s, Inc.