Search hedges are standardized searches that you can add to your search to limit your results. They can be thought of as a limiter. Hedges differ from the limits or filters in databases because they are written and tested by researchers to ensure their accuracy. The native limiting/filter option in databases often rely on indexing which can make them a little less reliable than published and tested hedges.
Search hedges can help you limit your search to things like age range, human subjects, populations, and more.
Listed below are places where you can find published search hedges to add to your search. It is important to note the date of a published search hedge as they can quickly become out of date as database syntax and features change. However, even out of date search hedges can give you a good place to start.