Table 3. Study exclusion criteria
Exclusion criteria
Types of studiesNon-English language.
Published pre-1990.
Grey literature or not published in a peer reviewed journal.
Dissertations or theses.
Commentary articles, written to convey opinion or stimulate research and/or discussion, with no research component.
Types of participantsNon-medical healthcare professional, allied healthcare professionals only.
Dentists, dental practitioners, vets, nurses, medical students.
Types of outcome measuresAnything except doctors’ perspective.
Switching between specialties.
Burden on patients, societal perspectives.
Economic burden at a society level; for example, costs to government or councils.