Survey with privacy experts
A survey was conducted with privacy experts found on the first version of the SLR in order to verify the relevance of the concepts found for the privacy domain. Eight people participated in the study, who were invited to participate in the survey through an invitation via e-mail.
The survey results indicate medians and interquartile range which shows the dispersion of the data around the median. The survey just evaluated the 54 concepts form the SLR first version. Therefore, seven concepts related to privacy have medians less than 3 and were disregarded from the conceptual model, they are: openness, unobservability, opportunity, strength, weakness, conflict and measure. Twenty one concepts have medians from 3 and less than 4. And, twenty-six concepts have medians from 4. Therefore, of the 54 concepts found in the SLR first version, only 47 were considered for the conceptual model.
In summary, the conceptual model (52 concepts) was constructed based on 54 concepts from the SLR first version (which were evaluated in the survey that discarded 7 concepts) and 5 concepts from the SLR second version.