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Glossary of terms

Frequently used systematic review terms

These are some of the commonly used terms associated with systematic reviews.

Note: This is not intended to be a comprehensive list.

Term

Definition

Covidence

 An online tool which helps reviewers undertake the screening process.

Critical appraisal

 (Also 'quality assessment') A process by which methodological quality and risk of bias is assessed in individual studies.

Data extraction

 Pulling out the useful data from individual studies.

Evidence-based practice

(Also 'EBP') "The conscientious use of current best evidence in making decisions about patient care" (Sackett, Straus, Richardson, Rosenberg, & Haynes, 2000). Systematic and scoping reviews are two publication types that adhere to EBP principles.

Grey literature

 Non published, or ephemerally released evidence, e.g. Government policy document / report

Meta-analysis

(Also 'forest plot')  A form of data synthesis that typically appears as data table accompanying an SR. Shows the degree of effect of each included study, as well as an ‘overall average’.

PICO / PIO / PICOT

 The typical framework for breaking down a systematic review question. Stands for population, intervention, comparison, outcome. Can include timeline where relevant.

PRISMA

 Preferred reporting guidelines for systematic reviews and meta-analysis (There is a also "PRISMA-P" for Protocol guidelines).

Prospero

 An online registry for SR Protocols.

Protocol

 The ‘recipe’ for how the review will be undertaken. Often published.

Scoping review

Like a systematic review, but a quality assessment is typically not done. (Note: not the same as "scoping out the literature")

Screening

 A two part process where articles are assessed for their suitability for inclusion in the review.

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Systematic review 

(Also 'SR') 'A review that uses explicit, systematic methods to collate and synthesise findings of studies that address a clearly formulated question.' -- PRISMA statement