Methodologic issues in palliative care psychosocial research

The conduct of psychosocial research with palliative care patients or staff presents a major investigative challenge. The fragility of patients and their physical or cognitive limitations severely curtail the types of studies that are possible and the research methods that can be applied. A major limitation is that randomization, a critical experimental design feature, is rarely possible or ethical as a means of evaluating palliative care. However, even given the practical limitations of constructing a randomized experimental design, methodologically acceptable studies are possible, and methodologically inappropriate approaches can be avoided. Case reports (anecdotal studies) produce data that cannot be generalized to other patients. Single-test, no control group studies should be avoided for similar reasons. Acceptable research techniques that are feasible in the palliative care setting are renewed: careful research questions and associated hypotheses; determining appropriate sample sizes; developing comparison groups; selecting and evaluating an appropriate interview guide or questionnaire; avoiding interviewing bias, and so on. Moreover, it is necessary for the professional standing of palliative care that the exchange of information between palliative care staff and other health professionals be based upon scientifically sound studies.