Actual situation of decision-making support from medical staff when cancer patients make treatment choices.

We investigated factors involved in decision-making support provided by physicians, nurses, pharmacists and medical and psychiatric social workers involved in cancer care. A questionnaire survey on decision-making support was conducted. The level of clinician support was classified as 'supporting patients' 'decision-making process regarding cancer treatment', 'no support for patients' 'decision-making process regarding cancer treatment' or 'team-based support for patients' 'decision-making process regarding cancer treatment'. Physicians estimated that 83.7% of patients made a cancer treatment decision within 1 week, but 45.4% of patients had difficulty making a decision. Medical personnel should support patients who have difficulty making decisions, establish a screening method to identify those needing support and develop a system providing decision-making support through interprofessional work.