Fill in the Blanks Week 2 Fill in the Gaps...Online version Week 2 NS3118 by Alan Ramsay 1 systematic hypotheses repository Metaanalyses Secondary Cochrane examining Primary research is the process of reviewing previous original research to produce a more comprehensive or unique understanding of a topic of interest . research is the process of undertaking an original study and collecting new data . A review is a common strategy for an explicit issue in clinical practice . should be based on systematic reviews , but not all systematic reviews include a Meta - analysis . A meta - analysis combines the results of several studies that address a set of related research . The Collaboration is the oldest and largest of systematic reviews .