Table 8. Costs parameters of disease management used in the decision-tree model (in € for 2013).

Cost parameter	Base-casea	High cost estimate (base-case +20%)	Low cost estimate (base-case -20%)
ID Sarcoma / FD Sarcoma	€6,497	€7,796	€5,197
ID Sarcoma / FD Intermediate malignant tumor	€2,671	€3,205	€2,136
ID Sarcoma / FD GIST	€30,244	€36,292	€24,195
ID Sarcoma / FD Desmoid tumor	€1,469	€1,762	€1,175
ID Sarcoma / FD Non-sarcoma malignant tumor	€9,115	€10,937	€7,292
ID Sarcoma / FD Benign tumor	€402	€483	€322
ID Intermediate malignant tumor / FD Sarcoma	€14,924	€17,909	€11,940
ID Intermediate malignant tumor / FD Intermediate malignant tumor	€2,162	€2,594	€1,729
ID Intermediate malignant tumor / FD Desmoid tumor	€1,106	€1,327	€884
ID Intermediate malignant tumor / FD Non-sarcoma malignant tumor	€12,004	€14,405	€9,604
ID Intermediate malignant tumor / FD Benign tumor	€331	€351	€310
ID GIST / FD Sarcoma	€5,404	€6,484	€4,323
ID GIST / FD GIST	€30,015	€36,017	€24,012
ID GIST / FD Desmoid tumor	€839	€1,006	€671
ID GIST / FD Non-sarcoma malignant tumor	€7,648	€9,178	€6,119
ID GIST / FD Benign tumor	€340	€407	€272
ID Desmoid tumor /FD Sarcoma	€4,963	€5,955	€3,970
ID Desmoid tumor / FD Desmoid tumor	€1,219	€1,462	€975
ID Desmoid tumor / FD Benign tumor	€640	€767	€512
ID Non-sarcoma malignant tumor / FD Sarcoma	€7,073	€8,488	€5,659
ID Benign tumor / FD Sarcoma	€5,559	€6,671	€4,448
ID Benign tumor / FD Intermediate malignant tumor	€1,872	€2,246	€1,497
ID Benign tumor / FD GIST	€28,752	€34,502	€23,001
ID Benign tumor / FD Desmoid tumor	€1,380	€1,655	€1,104
ID Benign tumor / FD Non-sarcoma malignant tumor	€30,112	€36,134	€24,089
ID Sarcoma	€6,166	€7,465	€4,868
ID Intermediate malignant tumor	€1,831	€2,263	€1,398
ID GIST	€29,684	€35,687	€23,681
ID Desmoid tumor	€888	€1,132	€644
ID Non-sarcoma malignant tumor	€9,021	€10,891	€7,151
ID Benign tumor	€72	€86.4	€57.6

^aBased on hypothetical resources used according to the characteristics and disease of the patients from the RRePS network (2010) and using national and international guidelines. Due to budgetary constraints, the costs of disease management for patients with a concordant diagnosis were estimated from the final diagnosis of the patients with a discordant diagnosis, whose sample size was smaller than the concordant cases.

Abbreviations: ID: initial diagnosis, FD: final diagnosis.