We are conducting a systematic review in the education sciences and are testing and optimizing our search syntaxes using litsearchr (R package by Eliza Grames). We get sensitivity and precision values for all the search strategies tested as well as a score for the number of articles needed to be scanned to find one relevant (tested against a gold standard). Now we were wondering if there are some norm values for sensitivity and precision scores that search strategies should be evaluated against, such as 90% etc. (we want to focus on sensitivity)