What is an example of a cross-sectional study?
What is an example of a cross-sectional study?
Another example of a cross-sectional study would be a medical study examining the prevalence of cancer amongst a defined population. The researcher can evaluate people of different ages, ethnicities, geographical locations, and social backgrounds.
What is a cross-sectional control study?
Cross sectional studies are used to determine prevalence. They are relatively quick and easy but do not permit distinction between cause and effect. Case controlled studies compare groups retrospectively. They seek to identify possible predictors of outcome and are useful for studying rare diseases or outcomes.
What is an example of a control study?
For example, investigators conducted a case-control study to determine if there is an association between colon cancer and a high fat diet. Cases were all confirmed colon cancer cases in North Carolina in 2010. Controls were a sample of North Carolina residents without colon cancer. The odds ratio was 4.0.
Are there controls in cross-sectional study?
Norain, in cross-sectional design, the study population is not selected based on exposure or outcome. Therefore, the answer to your question, no, you don’t have to have a control group.
How do you identify a cross-sectional study?
Defining Characteristics of Cross-Sectional Studies
- The study takes place at a single point in time.
- It does not involve manipulating variables.
- It allows researchers to look at numerous characteristics at once (age, income, gender, etc.)
- It’s often used to look at the prevailing characteristics in a given population.
What type of sampling is used in case-control studies?
In a case-control study the same cases are identified and classified as to whether they belong to the exposed or unexposed cohort. Instead of obtaining the denominators for the rates or risks, however, a control group is sampled from the entire source population that gives rise to the cases.
How do you select controls for a case-control study?
Selection of the Controls
- The comparison group (“controls”) should be representative of the source population that produced the cases.
- The “controls” must be sampled in a way that is independent of the exposure, meaning that their selection should not be more (or less) likely if they have the exposure of interest.
How many controls are in a case?
If data are available at no extra cost, then we may recruit multiple controls for each case. However, if it is expensive to collect exposure and outcome information from cases and controls, then the optimal ratio is 4 controls: 1 case.
What are the types of cross sectional study?
Key Words
What are the advantages and disadvantages of cross – sectional study?
– a) The study was longitudinal by design – b) It was possible to estimate the prevalence of chronic fatigue in women aged 18-50 years – c) It was possible to estimate the incidence of chronic fatigue in women …
What level of evidence is a cross sectional study?
Cross Sectional Study – Level of Evidence Level 4 – Observational Research In a cross-sectional study, data from a defined population or a representative subset at a specific point in time or interval is analyzed. It is a type of observational research method. In the Health care sector, cross-sectional studies involve data collected at a defined time.
What type of research is cross sectional?
Case-control