There are several types of scholarly articles: qualitative vs. quantitative methodology, reports of a single research study, randomized control trials, reviews of the literature, systematic reviews and meta-analyses, etc. This page gives examples of three types of scholarly articles (qualitative, quantitative, and systematic review) and the Levels of Evidence pyramid.
Pyramid: Levels of Evidence as defined Gallagher-Ford (2018)
Systematic reviews are the highest level of evidence. They can be found in most scholarly Nursing databases such as CINAHL Ultimate and Ovid Nursing, and make up a significant component of the Joanna Briggs Evidence-Based Practice Database. See the Databases tab on the Nursing Resources guide for more on these databases.