Fig. 2From: Combined models for pre- and post-treatment longitudinal biomarker data: an application to CD4 counts in HIV-patientsIllustrative plot of an asymptotic regression curve. Here the baseline (u i ) is set to 15, the asymptotic maximum (ϕ1:i) is set to 25 and the rate of recovery parameter (ϕ2:i) is set to log(log(2)), leading to a ‘half-life’ of 1Back to article page