NCT02674360.

Trial name or title	RCT regarding SDM online training andfFace‐to‐face SDM training
Methods	RCT
Participants	Inclusion criteria Oncologists or physicians treating a significant percentage of breast and/or colorectal cancer patients Internet access Exclusion criteria No exclusion criteria
Interventions	Active comparator: SDM Online Training Quote: "The intervention consists of a SDM training for oncologists, which is conducted in the form of a web‐based SDM online Training (intervention group I). During training, the oncologists are guided to use decision aids for breast and colon cancer patients in their consultations, which were developed and evaluated in a previous project. The SDM training has the same duration (one session à 120 minutes) in both intervention groups. Doctors in the intervention group receive decision aids for breast cancer and colorectal cancer patients during training. The training contents are based on an already developed, evaluated and published SDM manual. The SDM online training works on the modeling principle." Active comparator: Face‐to‐Face SDM Training Quote: "The intervention consists of a SDM training for oncologists, which is conducted in the form of an individualized, context‐based SDM individual face‐to‐face training at the workplace of the participants (intervention group II). During training, the oncologists are guided to use decision aids for breast and colon cancer patients in their consultations, which were developed and evaluated in a previous project. The SDM training has the same duration (one session à 120 minutes) in both intervention groups. Doctors in the intervention group receive decision aids for breast cancer and colorectal cancer patients during training. The training contents are based on an already developed, evaluated and published SDM manual. The individual training works on the coaching principle." No intervention: Control Group Quote: "The Control Group receives no SDM Training. All participants of the Control Group will be offered to participate in the SDM Online Training after T2."
Outcomes	Primary outcome Change from baseline in SDM competence measured by an objective Rating (OPTION) Secondary outcomes Change from baseline in SDM competence by subjective standardized patient rating (Dyadic Option) Change from baseline in SDM competence by subjective standardized patient rating (Patient Perception Scale) Change from baseline in SDM competence by subjective standardized patient rating (SDM‐Q‐9) Change from baseline in SDM competence by subjective physician rating (Dyadic Option) Change from baseline in SDM competence by subjective physician rating (Physician‐Perception‐Scale) Change from baseline in SDM competence by subjective physician rating (SDM‐Q‐9) Change from baseline in quality of doctor‐patient‐interaction by subjective Patient rating (Questionnaire on the Quality of physician‐patient interaction) Change from baseline in quality of doctor‐patient‐interaction by subjective Physician rating (Questionnaire on the Quality of physician‐patient interaction)
Starting date	May 2016
Contact information	Kathrin M Gschwendtner, Dr, +49 6221/56‐34587, kathrin.gschwendtner@med.uni‐heidelberg.de
Notes