![]() ![]() They are becoming very popular especially in cases where a lot of individual and smaller studies have already been performed.įor instance, there may be several different studies on the effect of treatment A for colon cancer. Meta-analysis may be considered more reliable than primary research as they include all the previously published data on the same research question and discuss the differences in study outcomes and the reasons behind them. ![]() These are immensely helpful to understand the global effects of a particular finding rather than depending on the results of a single, isolated study in a particular region. Meta-analysis is a type of systematic review, but a systematic review in which statistical analysis is carried out to compare previously published studies and derive new interpretations or new findings. Systematic reviews are structured in the typical IMRAD structure as are primary research articles, in which an abstract is followed by the main test including introduction, methods, results, and discussion and conclusions, followed by a reference list. Qualitative systematic reviews derive data from descriptive or qualitative results, whereas quantitative systematic reviews include studies with numerical data. Systematic reviews can be qualitative or quantitative.
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