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The introduction should be comprehensive and cover all of the main elements of the topic under review, as well as appropriate information about pathophysiology, diagnosis, prognosis, prevalence or incidence or other detail important to the review and why the topic or question of interest lends itself to an Umbrella Review for example, addressing a range of interventions relevant to a particular diagnosis. The primary objective of the Umbrella Review should be evident in the introduction as it situates the justification and importance of the question(s) posed. While many of these details will already have been addressed in "Introduction" of the protocol, many reviewers will find that the background information provided with the protocol needs modification or extension following the conduct of the review proper. The introduction should conclude with a statement that a preliminary search for previous Umbrella Reviews on the topic was conducted (state the sources searched e.g. JBI Evidence Synthesis, The Cochrane Library, Campbell Collection etc.).

The introduction should conclude with an overarching review objective that captures and aligns with the core elements/mnemonic of the inclusion criteria (e.g. PICO). The stated objective should clearly indicate what the review project is trying to achieve. The objective(s) may be broad and will be aligned to specific review question(s). The objectives or aims of an example review may be: To examine non-pharmacological interventions for the management of aggressive behaviors in elderly patients with dementia. For publication in JBI Evidence Synthesis, Vancouver style referencing should be used throughout the review with superscript numbers without brackets used for in-text citations.