Publication Characteristics (also called "Publication Types") describe the type of publication being indexed (i.e., the format of the publication) or characteristics of the research (i.e., the research design). There are also Publication Type terms that describe what type of organization funded the research. Visit the MeSH site to see a list of Publication Characteristics.
There are three main categories:
Notice in our PubMed citation example ("Exceptional early blood pressure control rates: the ACCOMPLISH trial") that Randomized Controlled Trial and Research Support, Non-U.S. Gov’t are listed under Publication Types.