ESTRO 2021 Abstract Book

S207

ESTRO 2021

while patients with better numeracy skills (OR 1.2 [95%CI 1.05-1.36], p =0.011) and chemoradiotherapy history (OR 25.0 [95%CI 8.8-91.7], p <0.001) had higher preference for chemoradiotherapy .

Figure 1. Attribute importance ratings in decision making between adjuvant chemoradiotherapy and radiotherapy alone for high-risk endometrial cancer

Pt = Patients. Cl = Clinicians. * p ≤ 0.01 shows significance; ** p ≤ 0.05 shows a trend. Conclusion

Survival benefit and long-term symptoms are the most important attributes in decision making regarding adjuvant therapy for high-risk endometrial cancer. There is a considerable difference in minimally desired survival benefit to make adjuvant chemoradiotherapy worthwhile, both among and between patients and clinicians. Overall, patients with endometrial cancer in the Netherlands desired higher survival benefits than clinicians before preferring chemoradiotherapy.

Proffered papers: Proffered papers 18: Training and implementation for new technologies

OC-0301 Update of the ESTRO-EFOMP core curriculum for medical physics experts in radiotherapy C. Garibaldi 1 , M. Essers 2 , B. Heijmen 3 , J. Bertholet 4 , E. Koutsouveli 5 , M. Schwarz 6 , C. Bert 7 , N. Jornet 8 , C.H. Clark 9 1 IEO European Institute of Oncology, IRCCS, Unit of Radiation Research, Milano, Italy; 2 Institute Verbeeten, Department of Medical Physics and Instrumentation, Tilburg, The Netherlands; 3 Erasmus MC Cancer Institute Erasmus University, Division of Medical Physicis, Department of Radiation Oncology, Rotterdam, The Netherlands; 4 Inselspital, Bern University Hospital, Division of Medical Radiation Physics, Department of Radiation Oncology, Bern, Switzerland; 5 Hygeia Hospital, Department of Medical Physics, Athens, Greece; 6 Azienda Provinciale per i Servizi Sanitari (APSS) , Protontherapy Department, Trento, Italy; 7 Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Radiation Oncology, Erlangen, Germany; 8 Hospital de la Santa Creu I Sant Pau, Servei de Radiofisica i Radioprotecció, Barcelona , Spain; 9 University College London Hospital, Department of Radiotherapy Physics, Teddington , United Kingdom

Purpose or Objective