<prompt> Translate the following text to EnglishKama ilivyoelezwa hapo juu, mfano wa utafiti wa kesi ni jinsi maeneo yanavyopendekezwa, jinsi data zinakusanywa na jinsi zinavyopimwa.  <response>: We have said that the features distinguishing case studies from other methods are how sites are selected, how the data are collected, and how they are analyzed. 