Fig. 3. Deterministic analyses with relative-risk point estimates for postoperative mortality and morbidity. Differences in quality-adjusted life-years (Δ QALY) are plotted against cost differences (Δ costs, €). The model was run using the baseline, and the stepwise increased the baseline values (by 25–90%) of relative risk. Appendix 3 displays the stepwise increased estimates for relative risks.