Can you distinguish the 3 most commonly used research types in clinical practice?

With the development of clinical medicine, the hospital pays more and more attention to the clinical research ability of physicians. Scientific research ability is not only a comprehensive reflection of the depth and breadth of professional knowledge, but also a necessary condition for future development.

A study published in the Chinese Journal of Optometry and Vision Science, titled “Investigation and Analysis of Chinese Ophthalmologists’ Understanding of the Types of Clinical Research and Research,” showed that more than 50 % of ophthalmologists are not aware of common types and basic concepts of clinical research.

In this study, 4 basic questions of clinical research were set, and it was found that only 47.4%, 45.1% and 45.1% of doctors, masters and undergraduates answered correctly 3 or more questions, respectively. 34.8%.

What are the 3 commonly used types of research designs?


3 study types include: case-control studies, cohort studies, and randomized controlled trials.

Case-control study is a “cause-to-cause” study, which is a retrospective observational study; cohort study is a “cause-to-effect” study, which is a prospective study; A randomized controlled trial is an experimental method to follow up and compare the outcomes of the observation group and the experimental group to determine the effect of a measure.

Case-control studies and cohort studies do not involve human intervention in the study population, while randomized controlled trials do. In the design of clinical research projects, there are mainly three types of experimental designs, and the concepts are easily confused.

Residence, highest score instead

The 197 respondents in this survey are mainly chief physicians and deputy chief physicians of ophthalmology from hospitals above the second level. The higher the degree, the higher the total score.

The total score in the title is resident physician, attending physician, chief physician and deputy chief physician. Resident physicians scored higher than senior physicians.

Because most residents are students who have graduated in recent years, and their education is generally master’s degree or above, and secondly, residents are under great pressure to promote professional titles and have higher requirements for scientific research, and they are more active in learning scientific research knowledge. , to write a dissertation.

Finally, the study also found that the more developed the city where the hospital was located, the higher the score. This is because hospitals in Beijing, Shanghai, Guangzhou and provincial capital cities have realized the importance of scientific research and can provide more training opportunities for clinical research, thereby improving the clinical research capabilities of clinicians.

How to improve scientific research ability?

In order to realize the close integration of scientific research and clinical practice, this study also puts forward the following suggestions, such as: strengthening the promotion of clinical scientific research knowledge, actively organizing and implementing multi-center large-scale ophthalmic clinical research, Acquire experience through cooperation and exchange, strengthen the construction of scientific research talent echelon, and establish a scientific research incentive mechanism.

At the same time, clinicians should also fully understand the background knowledge of scientific research and actively learn research methods.

Clove Experiment has organized clinical research topics for everyone. The following topics include introductory teaching videos, detailed explanations of graphic and text experiences, and classic scientific research questions and answers, which can help students without scientific research foundation get started quickly!

The author of this article: Xiao Huang

Picture source: Lilac experimental design team