types of research studies trials

A study protocol should be written and complete documentation of the study's process should also be done. This is vital in order for other scientists to be able to reproduce and check the results afterwards. The main types of studies are randomized controlled trials (RCTs), cohort studies, case-control studies and qualitative studies.

Below are descriptions of some different kinds of clinical research. Treatment Research generally involves an intervention such as medication, psychotherapy, new devices, or new approaches to ...

Clinical research is the study of health and illness in people. There are two main types of clinical research: observational studies and clinical trials. Read and share this infographic (PDF, 317K) to learn why researchers do different kinds of clinical studies. Observational studies monitor people in normal settings.

This article covers the classification of individual study types. The conception, implementation, advantages, disadvantages and possibilities of using the different study types are illustrated by examples. The article is based on a selective literature research on study types in medical research, as well as the authors’ own experience.

A type of study in which people are observed or certain outcomes are measured. No attempt is made by the researcher to affect the outcome — for example, no treatment is given by the researcher. Clinical trial (interventional study). During clinical trials, researchers learn if a new test or treatment works and is safe.

For example, a the control arm of a randomised trial may also be used as a cohort study; and the baseline measures of a cohort study may be used as a cross-sectional study. Spotting the study design. The type of study can generally be worked at by looking at three issues (as per the Tree of design in Figure 1): Q1. What was the aim of the study?

Research study designs are of many types, each with its advantages and limitations. The type of study design used to answer a particular research question is determined by the nature of question, the goal of research, and the availability of resources. Since the design of a study can affect the validity of its results, it is important to ...

Clinical research includes all research that involves people. Types of clinical research include: Epidemiology, which improves the understanding of a disease by studying patterns, causes, and effects of health and disease in specific groups. Behavioral, which improves the understanding of human behavior and how it relates to health and disease.

Understanding Clinical Studies. Part of the challenge of explaining clinical research to the public is describing the important points of a study without going into a detailed account of the study’s design. There are many different kinds of clinical studies, each with their own strengths and weaknesses, and no real shorthand way to explain them.

Introduction. This article provides a brief overview of principles of epidemiology and clinical research design and covers all the topics required by the American Board of Pediatrics content outline pertaining to study types (and uses the same alphabetical numbering in the content outline) and systematic reviews.