
43Systematic Literature Reviews
The next step is to construct data extraction forms that will help to summarize the infor-
mation extracted from the primary studies in view of the research questions. The details of
which specic research questions are answered by specic primary study are also present
in the data extraction form. Hence, one of the aim of the data extraction is to nd which
primary study addresses which research question for a given study. In many cases, the
data extraction forms will extract the numeric data from the primary studies that will
help to analyze the results obtained from these primary studies. The rst part of the ...