The results of research studies are usually published as articles in journals. You can find such journal articles by going to a specific journal's website, by searching in a database such as CINAHL or PubMed, or by looking at the references of another article. Searching a database is usually the most efficient way to find articles reporting on the results of a research study.
Two ways to narrow to research articles are to use the filters or limiters provided by a database, or to add research method terms into your search.
1. CINAHL and PubMed provide filters allowing you to narrow your search to studies such as randomized controlled trials or observational studies.
Quick directions on using filters in PubMed: https://libraryguides.missouri.edu/HSLDatabaseHelp/PubMed#s-lg-box-31401202
Quick directions on using filters in CINAHL: https://libraryguides.missouri.edu/HSLDatabaseHelp/CINAHL#s-lg-box-29438498
CINAHL has a broad filter for research overall, and also filters for specific research methods.
2. You can limit your results to research by adding specific research methods terms to your search. This is necessary for databases, such as Scopus, which don't have filters or don't have a filter for the specific method you need.
Research methods for quantitative studies are: Randomized controlled trial, clinical trial, comparison study, cohort study, longitudinal study, retrospective study, prospective study, observational study. Note that this is not a comprehensive list.
Research methods and search terms for qualitative studies are: enthnographic, grounded theory, phenomonological, themes, focus groups. Note that this is not a comprehensive list.