What is a single cross-sectional study?
A type of research design where one sample is drawn from the population of interest only once.
Is a cross-sectional study a single study?
The cross-sectional analysis assesses topics during a single instance with a defined start and stopping point, unlike longitudinal studies, where variables can change during extensive research.
What is a cross sectional research study?
Abstract. Cross-sectional study design is a type of observational study design. In a cross-sectional study, the investigator measures the outcome and the exposures in the study participants at the same time.
How many groups are in a cross-sectional study?
two groups
In cross sectional studies , two groups become apparent after data collection which is inherent character of cross sectional inquiries .
What is the advantage of a cross-sectional study?
The benefit of a cross-sectional study design is that it allows researchers to compare many different variables at the same time. We could, for example, look at age, gender, income and educational level in relation to walking and cholesterol levels, with little or no additional cost.
Why do a cross-sectional study?
Cross-sectional studies are used to assess the burden of disease or health needs of a population and are particularly useful in informing the planning and allocation of health resources. A cross-sectional survey may be purely descriptive and used to assess the burden of a particular disease in a defined population.
What is an example of cross sectional data?
Cross-sectional data refer to observations of many different individuals (subjects, objects) at a given time, each observation belonging to a different individual. A simple example of cross-sectional data is the gross annual income for each of 1000 randomly chosen households in New York City for the year 2000.
What is a good sample size for a cross-sectional study?
A smaller ‘d’ implies a larger sample size. Therefore, the choice of ‘p’ is crucial. = 400 this sample size will enable us to detect the truth if the prevalence is between 18-22% (or more). = 1900 this sample size will enable us to detect the truth if the prevalence is between 4-6% (or more).
What is wrong with cross-sectional studies?
The weaknesses of cross-sectional studies include the inability to assess incidence, to study rare diseases, and to make a causal inference. Unlike studies starting from a series of patients, cross-sectional studies often need to select a sample of subjects from a large and heterogeneous study population.
What are the pros and cons of a cross-sectional study?
Advantages/Disadvantages of Cross-Sectional Study
| Advantages | Disadvantages |
|---|---|
| Cheap and quick | Useless for determining cause and effect |
| Multiple variables at the time of a data snapshot | Snapshot timing may not be representative |
| Data works for various types of research | Flawed if there is a conflict of interest |