Mixed Effects Models with Censored Covariates, with Applications in HIV/AIDS Studies

Figure 2

Plot of two individuals' (first row and 2nd row) fitted (predicted) viral load values and the corresponding hazard, survival functions based on the joint Cox and NLME model and empirical LME model (ELM), respectively. The open circles represent the observed viral loads. Left censored viral loads are replaced by one-half of the detection limit (in log₁₀-scale).