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Asking the question: What is the evidence for EBM? Comes within the scope of the following
family of questions:
1) What is the evidence that asking questions is worthwhile in clinical contexts?
2) What is that evidence that evidence is (or can be) found for the clinical questions?
3) What is the evidence that the dialogue between asking questions and answering them is
worth the effort?

These sorts of questions are philosophical.

The treatment of the questions could be answered in the following philosophical
perspectives:
Ethical – eg is it moral to do 1 to 3, and if so by what ethical perspective would one achieve a
morally worthwhile perspective?
Analytical –eg how might one use various conceptual tools in decision theory and in statistical
theory to achieve 1 to 3?
Political –eg who should ask the questions? who should answer them? How does society
control the production and reception of evidence? How does a society deal with the dialogue
between a question asked in health care and its answer?

Understanding these issues are relevant to productive discussions about EBM.  However,
understanding is difficult for two reasons. Firstly, there is not a large body of scholarly work
that addresses the ethical, analytical, or political aspects of EBM issues within the clinical
medical (or nursing) field. Secondly, the pragmatics of medical health care is firmly embedded
in casuistry – medical & nursing people remember a case far better than they remember the
details of an RCT.  There are many reasons for this but the most powerful is a historical one
health care has a very long history of basing its learning and research on case-based activity.
The history of EBM is short.

My contention from a primary care point of view is that all research, teaching, and clinical
perspectives on EBM need serious philosophical work.

Dr Marjan Kljakovic
Senior Lecturer in General Practice
Convenor of Evidence Based Medicine Teaching
Wellington School of Medicine and Health Sciences
University of Otago
New Zealand