| Research or Evidence | Definition & Example |
| Meta-analysis |
Analysis of data from a number of independent studies of the same subject in order to determine overall trends and statistical significance. |
| Systematic Review |
An exhaustive and comprehensive review of research and studies (clinical trials) on a particular health related topic. All relevant results are combined and summarized into one published review. |
| Randomized Control Trial |
(RCT) is a scientific study that randomly assigns participants into a control group to determine whether a cause-effect relationship exists between treatment and outcome. |
| Cohort Study |
A longitudinal study where patients (participants) with a similar health condition are followed over time and compared with another group of patients not affected by the same condition. |
| Cross-Sectional Study |
Observing and collecting data from an entire population at a defined time. Results may be used to describe features of a population, prevalence of a health condition or cause and effect of a particular disease. |
| Case Study |
A Case Study is an article that documents an individual case (patient) condition. It is generally used to identify new trends or unexplained conditions or diseases. |