Our paper, with Amadou Barry and Karim Oualkacha, a new GEE method to account for heteroscedasticity using asymmetric least-square regressions is now published in the Journal of Applied Statistics Generalized estimating equations (GEE) are widely used to analyze longitudinal data; however, they are not appropriate for heteroscedastic data, because they only estimate regressor effects on the mean response – and therefore do not account for data heterogeneity. Here, we combine the GEE with the asymmetric least squares (expectile) regression to derive a new class … <a href=“https://freakono …