It is common to confuse systematic and literature reviews as both are used to provide a summary of the existent literature or research on a specific topic. Even with this common ground, both types vary significantly. Please review the following chart (and its corresponding poster linked below) for a detailed explanation of each as well as the differences between each type of review.
The evidence pyramid (image above) visually depicts the evidential strength of different research designs. Studies with the highest internal validity, characterized by a high degree of quantitative analysis, review, analysis, and stringent scientific methodology, are at the top of the pyramid. Observational research and expert opinion reside at the bottom of the pyramid. In evidence-based practice the systematic review is considered the highest level of information and is at the top of the pyramid. (The pyramid was produced by HLWIKI Canada and is CC).