The following links provide information on defining and identifying types of medical research studies (also referred to as levels of evidence):
with permission from: http://mesacc.libguides.com/content.php?pid=549563&sid=4526523
|Research or Evidence||Definition & Example|
Analysis of data from a number of independent studies of the same subject in order to determine overall trends and statistical significance.
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.
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.
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.
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.