Evidence-Based Medicine

Systematic review
A type of review article that uses explicit methods to comprehensively analyze
and qualitatively synthesize information from multiple studies. Aystamatic
Review is a literature review focused on a single question which tries to identify,
appraise, select and synthesis all high quality research evidence relevant to
that question. A review in which specified and appropriate methods have
been used to identify, appraise, and summarise studies addressing a defined
question. It can, but need not, involve meta-analysis.
The present requirements for reporting systematic reviews are search date,
number of trials of the relevant option, number of trials that perform the
appropriate comparisons, comparisons, details on the type of people, follow up
period, and quantified results if available.
T
True negative
A person without the target condition (defined by a gold standard) who has a
negative test result.
True positive
A person with the target condition (defined by a gold standard) who also has a
positive test result.
V
Validity
The soundness or rigour of a study. A study is internally valid if the way it is
designed and carried out means that the results are unbiased and it gives you
an accurate estimate of the effect that is being measured. A study is externally
valid if its results are applicable to people encountered in regular clinical
practice.
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