Fig. 4From: Joint model robustness compared with the time-varying covariate Cox model to evaluate the association between a longitudinal marker and a time-to-event endpointObserved Kaplan-Meier (KM) curve and predicted survival curves from the joint model assuming constant, Weibull and spline based hazards. A logarithmic transformation of PTX3 was used in the joint modelsBack to article page