Physician, patient, and contextual factors affecting treatment decisions in older adults with cancer and models of decision making: a literature review.

Purpose/objectives: To review physician, patient, and contextual factors that affect treatment decision making in older adults diagnosed with cancer, and to relate those factors to theoretical models of decision making.

Data Sources: PubMed (1966 to April 2010), PsycINFO (1967 to April 2010) and CINAHL® (1982 to April 2010) databases were searched to access relevant medical, psychological, and nursing literature.

Data Synthesis: Physician factors in treatment decisions included physician's personal beliefs and values, medical expertise, practice type, perception of lowered life expectancy, medical factors, power, and communication style. Patient factors included personal beliefs and values, ethnicity, decisional control preferences, previous health-related experience, perception of the decision-making process, and personal factors. Contextual factors included availability of caregiver, insurance, financial status, and geographical barrier.

Conclusions: A diverse group of factors were identified, which are likely to form a unique framework to understand clinical decision making and plan future investigations in older adult patient populations. Using longitudinal and prospective designs to examine the real-time interplay of patient, physician, and contextual factors will enable a better understanding of how those divergent factors influence actual treatment decisions.

Implications For Nursing: Oncology nurses can advocate autonomous (patient-driven), shared, or family-controlled treatment decisions, depending on an older patient's decisional role preference. Nurses can support patient autonomy during treatment decision making by coaching patients to engage in discussion of various evidence-based treatment options and a comprehensive discussion of the probability of success for each option with specialist providers. Oncology nurses may be able to promote treatment decisions that are consistent with a patient's personal preferences and values, with strong consideration of the patient's personal contexts.