There are many different types of clinical research.
- Epidemiology studies improve the understanding of a disease by studying patterns, causes, and effects of health and disease in specific groups of people.
- Behavioral studies improve the understanding of human behavior and how it relates to health and disease.
- Health services studies look at how people access health care providers and health care services, how much care costs, and what happens to patients as a result of the care they receive.
- Community-based participatory research engages the local community in all phases of the research process.
- Genetic studies find the role of genes in different diseases.
- Observational studies observe a group of people for many years, usually without any specific intervention. These studies can help scientists understand the natural history of a disease or the transition from wellness to illness.
- Physiological studies attempt to shed more light on how the human body functions.
- Public health research tries to improve the health and well-being of people from a population-level perspective. It may combine one or more types of clinical research.
- Clinical trials study the effects of an intervention or treatment on health outcomes.