Quasi Least Square Package QLS is a two-stage computational approach for estimation of the correlation parameters within the framework of GEE. It helps solving parameters in mean, scale, and correlation structures for longitudinal data. Software Depends: R (>= 2.4.1), geepack (>= 1.0-12), utils Jichun Xie <jichun@mail.med.upenn.edu> Jichun Xie <jichun@mail.med.upenn.edu>, Justine Shults <jshults@mail.med.upenn.edu> GPL (>= 2) 2009-07-24 application/tgz http://CRAN.R-project.org/package=qlspack