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What are the different types of epidemiological study designs?


  • Observational Studies. Case-Control Studies.
  • Cohort Studies. Cohort studies initially classify patients into two groups based on their exposure status.
  • Experimental Studies. Randomized Clinical Trials.

What are the 3 major types of epidemiologic studies?

Three major types of epidemiologic studies are cohort, case-control, and cross-sectional studies (study designs are discussed in more detail in IOM, 2000). A cohort, or longitudinal, study follows a defined group over time.

What is a cross-sectional study in epidemiology?

Cross-sectional study. In this third type of observational study, a sample of persons from a population is enrolled and their exposures and health outcomes are measured simultaneously.

What are epidemiological studies?

Epidemiological studies measure the risk of illness or death in an exposed population compared to that risk in an identical, unexposed population (for example, a population the same age, sex, race and social status as the exposed population).

What are the 5 W’s of epidemiology?

The difference is that epidemiologists tend to use synonyms for the 5 W’s: diagnosis or health event (what), person (who), place (where), time (when), and causes, risk factors, and modes of transmission (why/how).

Is Epidemiologist a doctor?

Are epidemiologists considered medical doctors? No. While epidemiologists study and investigate the causes and sources of diseases in much the same way as medical doctors, they’re not considered actual physicians. Perhaps the biggest reason why is treatment.

Do epidemiologists work in hospitals?

Epidemiologists work in offices and laboratories, usually at health departments for state and local governments, in hospitals, and at colleges and universities. Epidemiologists are also employed in the federal government by agencies such as the Centers for Disease Control and Prevention (CDC).

What is the salary of epidemiologist?

69,450 USD (2015)

Do epidemiologists go to medical school?

Epidemiologists need at least a master’s degree from an accredited college or university. Most epidemiologists have a master’s degree in public health (MPH) or a related field, and some have completed a doctoral degree in epidemiology or medicine.

How hard is it to get a job with the CDC?

It is hard to find a fulltime position with CDC and, once you do, it is fairly hard to advance your career (via promotion or changing jobs within CDC) due to the application process.

Is Epidemiology a good career?

There are many master’s and Ph. Melissa Nolan, an assistant professor of epidemiology at the University of South Carolina School of Public Health, says epidemiology is a great field for an adult learner to enter after pursuing another career.

What are 10 duties of an epidemiologist?

Responsibilities for Epidemiologist

  • Analyze data and find conclusions.
  • Create a plan of action for potential health crises.
  • Create reports detailing potential threats.
  • Give presentations to policy makers.
  • Communicate with policy makers on public health.
  • Manage multiple projects at once.

What are the job duties of an epidemiologist?


  • Identify causative agents or conditions that result in poor or adverse health effects.
  • Provide data and information concerning corrective actions.
  • Create programs to alleviate adverse health effects.
  • Propose practices or policies based on findings that will preserve or promote public health.

What are the responsibilities of an epidemiologist?


  • Plan and direct studies of public health problems to find ways to prevent and treat them if they arise.
  • Collect and analyze data—through observations, interviews, and surveys, and by using samples of blood or other bodily fluids—to find the causes of diseases or other health problems.

What are the job responsibilities of an epidemiologist?

Epidemiologists are scientists who study diseases within populations of people. In essence, these public health professionals analyze what causes disease outbreaks in order to treat existing diseases and prevent future outbreaks.

What does an epidemiologist do on a day to day basis?

On a daily basis, Epidemiologists supervise professional, technical, and clerical personnel. They plan and direct studies to investigate human or animal disease, preventive methods, and treatments for disease. Monitor and report incidents of infectious diseases to local and state health agencies.

How can I be a good epidemiologist?

In order to be successful as an epidemiologist, it helps to have these skills and qualities:

  1. Scientific inquiry and critical thinking.
  2. Understanding of math and statistical data.
  3. Sharp attention to detail.
  4. Strong interpersonal and communication skills.
  5. Proficiency in chemistry, biology and behavioral sciences.

What is the most appealing aspect of a career in epidemiology what would be the most difficult part of being an epidemiologist?

What would be the most difficult part of being an epidemiologist? The most appealing aspect is the difficulty since I’m guessing figuring out each outbreak will never be the same and some could be harder than others.

Why statistics and math are important tools for an epidemiologist?

Mathematical models and statistics are used extensively in epidemiology. This is because epidemiology studies the impact of a disease in a population. Therefore numbers are used to explain factors such as incidence rates (the rate of infections), the prevalence.

What kind of questions do Epidemiologists ask?

When a disease outbreak is identified, an epidemiologist may ask some of the following questions:

  • Why are infection rates of this disease higher than normal?
  • Why are infection rates of this disease higher than normal in this location?
  • What is the potential for the disease to spread?

What are the disadvantages of epidemiological study?

Can obtain only a relative measure of risk (odds ratio) (however odds ratios are similar to risk ratios for rare diseases); are subject to recall bias; selection of controls may be difficult; temporal relationships may be unclear; can study only one disease outcome at a time.

What are the limitations of epidemiology?

It may tell us how much physical activity people do but does not inform us of the quality of that physical activity. Nor does epidemiology tell us about the quality of life people are living. It can report on self-reported happiness, but beyond this, it is limited in how to determine what is making people happy.

Are epidemiological studies reliable?

Epidemiology studies tend to produce less reliable data that can be more difficult to interpret. For instance, it is extremely rare that an epidemiology study alone can confirm that a particular chemical exposure caused a health effect. Moreover, as noted by Stanford University professor Dr.

What are the benefits of epidemiological studies?

Epidemiologic studies can be used for many reasons, commonly to estimate the frequency of a disease and find associations suggesting potential causes of a disease. To achieve these goals, measures of disease (incidence) or death (mortality) are made within population groups.

Which is the most powerful epidemiological study?

Randomized, controlled clinical trials are the most powerful designs possible in medical research, but they are often expensive and time-consuming. Well-designed observational studies can provide useful insights on disease causation, even though they do not constitute proof of causes.

How does epidemiology benefit the community?

At this critical juncture in its history, epidemiology may benefit from further incorporating CBPR, increasing the field’s ability to study and understand complex community health problems, insure the policy and practice relevance of findings, and assist in using those findings to help promote structural changes that …

What is the main purpose of epidemiology?

Epidemiology is the study of how often diseases occur in different groups of people and why. Epidemiological information is used to plan and evaluate strategies to prevent illness and as a guide to the management of patients in whom disease has already developed.

What are the four uses of epidemiology?

For community diagnosis of the presence, nature and distribution of health and disease among the population, and the dimensions of these in incidence, prevalence, and mortality; taking into account that society is changing and health problems are changing. To study the workings of health services.

What are aims of epidemiology?

The principal aim of epidemiology is to identify factors related to the occurrence of disease. Identification of these factors both causal ( causation) and risk factors, enable developing a rational basis for prevention ( epidemiology, prevention).

What are the two main goals of epidemiology?

The objectives of epidemiology include the following: to identify the etiology or cause of disease. to determine the extent of disease. to study the progression of disease.