A primary source in science is a document or record that reports on a study, experiment, trial or research project. Primary sources are usually written by the person(s) who did the research, conducted the study, or ran the experiment, and include hypothesis, methodology, and results.
Primary Sources include:
NOTE: An article that is a review, systematic review, meta-analysis, letter to the editor, opinion, or response is not a primary source.
Finding Primary Sources: Under the Advanced Search, select Publication Type: Clinical Trial and Randomized Clinical Trial. (Hold down the CTRL or Command key to select multiple items in the list)
Finding Primary Sources: After conducting your search, check the boxes for Clinical Trial, Controlled Clinical Trial, and/or Randomized Clinical Trial under Article Type in the left sidebar.
