Development, and Evaluation of a Decision Aid to Support Patients’ Participa-tory Decision-making on Tumor-specific and Palliative Therapy in Advanced Cancer Patients: A Study Protocol. (Preprint)
BACKGROUND To support advanced cancer patients, for whom standard therapy is no longer avail-able, and their oncologists in therapy decisions, we aim to develop a decision-making aid (DA) in a multi-phased bicentric study. The DA aims to help patients to better un-derstand risks and benefits of available treatment options including the options of standard palliative care, off-label drug use within an individual treatment plan and involvement in clinical trials. OBJECTIVE This study protocol outlines the development and testing of a DA in a pre-post design study targeting at a heterogeneous population of advanced cancer patients. METHODS In phase I, The DA will be developed after of decisional needs of patients and views of health care providers based on face-to face interviews and focus groups discus-sions. Subsequently, the DA will be alpha-tested and redrafted, as necessary, in phase II. In phase III, the DA will be (1) beta-tested with patients and oncologists and (2) assessed by experts. In the last project phase, we will run a pre-post design study with n= 70 doctor-patient-encounters to access improvements on primary study outcome, i.e. patients’ level of decisional conflict. In addition, the user ac-ceptance will be tested. RESULTS Interviews with cancer patients, oncologists and health care providers have been completed. CONCLUSIONS A unique feature of this study is the development of a DA for patients with different types of advanced cancer, which covers a wide range of topics relevant for patients near the end of life such as forgoing cancer-specific therapy and patients’ inclusion in clinical trials. CLINICALTRIAL NCT04606238 https://clinicaltrials.gov/ct2/show/NCT04606238