Just gathering your results is not enough to create a systematic review of the literature. The next step is to begin analysing the results. There are a number of ways to do this, but it will often include categorising the themes within the research you find, so that you can identify the key areas that are being discussed (and also identify any gaps in the literature).
We have listed some tools you may wish to use to analyse results below.
CASP offers a set of 8 critical appraisal tools which can be used for analysing research. The include tools for systematic reviews, randomised controlled trials and qualitative studies:
The Critical Appraisal Skills Programme at the Centre for Evidence Based Medicine in Oxford has produced a number of appraisal tools for use when appraising different types of study.
You can find a number of useful guides at http://www.cebm.net/critical-appraisal/.
The International Centre for Allied Health Evidence at the University of South Australia collates links to a number of Critical Appraisal tools at http://www.unisa.edu.au/Research/Sansom-Institute-for-Health-Research/Research-at-the-Sansom/Research-Concentrations/Allied-Health-Evidence/Resources/CAT/.
The British Medical Journal has produced a series of articles on how to read different types of research papers at http://www.bmj.com/content/315/7109/672.full.
SAGE Research Methods is a research methods tool created to help researchers, faculty and students with their research projects. Researchers can explore methods concepts to help them design research projects, understand particular methods or identify a new method, conduct their research, and write up their findings. Since SAGE Research Methods focuses on methodology rather than disciplines, it can be used across the social sciences, health sciences, and more.
Online help is available from within SAGE Research Methods; there is also a dedicated LibGuide produced by SAGE itself:
There are a number of software solutions available for data collection and analysis, including literature. More information is available at http://www2.hull.ac.uk/lli/skills-development/idl/datacollectanalysis.aspx.