We examined associations of the CTOI, the RV/LV diameter ratio, and the PESI with the time to death using Cox-regression with robust standard errors. For VTE recurrence and PE-related death, we used competing risk regression according to Fine and Gray , accounting for non-PE-related death as a competing event. The strength of the association is reflected by the sub-hazard ratio (SHR), which is the ratio of hazards associated with the cumulative incidence function in the presence of a competing risk.