How Do You Collect Data From A Cross-sectional Study?

by | Last updated on January 24, 2024

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Cross-sectional data can be collected by

self-administered questionnaires

. Using these instruments, researchers may put a survey study together with one or more questionnaires measuring the target variable(s).

How does a cross-sectional study work?

In a cross-sectional study,

the investigator measures the outcome and the exposures in the study participants at the same time

. … After the entry into the study, the participants are measured for outcome and exposure at the same time [Figure 1]. The investigator can study the association between these variables.

What is the best sampling method for a cross-sectional study?

You can use

stratified random sampling

then simple random sampling for each strata of undergraduate students.

What sampling method is used for cross-sectional study?

Many cross-sectional studies are done through

questionnaires or interviews

. Using questionnaires to reach a large sample of the population of interest is relatively inexpensive but can result in low response rates.

What information can be obtained from a cross-sectional study?

A cross-sectional study examines

the relationship between disease (or other health related state) and other variables of interest as they exist in a defined population

at a single point in time or over a short period of time (e.g. calendar year).

What is a disadvantage of a cross-sectional study?

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 limitations of a cross-sectional study?

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.

Why is cross-sectional study good?

Cross-sectional studies serve many relevant purposes, and the cross-sectional design is the

most relevant design when assessing the prevalence of disease or traits

, prevalence of attitudes and knowledge among patients and health personnel, in validation studies comparing, for example, different measurement instruments, …

What is the meaning of cross-sectional study?

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

. … We can estimate the prevalence of disease in cross-sectional studies.

What is cross-sectional data examples?

Cross-sectional data are observations that come from different individuals or groups at a single point in time.

If one considered the closing prices of a group of 20 different tech stocks on December 15, 1986

, this would be an example of cross-sectional data.

Is a questionnaire a cross-sectional study?

Cross-sectional surveys can be conducted using any mode

of data collection

, including telephone interviews in which landline telephones are called, telephone interviews in which cell phones are called, face-to-face interviews, mailed questionnaires, other self-administered questionnaires, electronic mail, Web data …

Is a cross-sectional study a cohort study?

Stated differently, the cross-sectional cohort study is

a retrospective cohort study with all exposure and outcome information collected retrospectively

, and with an unknown amount of loss to follow-up.

How do you find the sample size for a cross-sectional study?

The following simple formula would be used for calculating the adequate sample size in prevalence study

(4); n = Z 2 P ( 1 – P ) d 2

Where n is the sample size, Z is the statistic corresponding to level of confidence, P is expected prevalence (that can be obtained from same studies or a pilot study conducted by the …

Do cross sectional studies have a control group?

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

. … Most of the time, though, you can define a control group after you select your study population in a cross sectional study.

How do you avoid selection bias in a cross-sectional study?

Selection bias can be minimized in cross sectional studies by

trying to contact those who cannot be contacted during the survey timings

.

How long do cross-sectional studies last?

The time interval between tests or administrations is, typically,

two to four weeks

.

Juan Martinez
Author
Juan Martinez
Juan Martinez is a journalism professor and experienced writer. With a passion for communication and education, Juan has taught students from all over the world. He is an expert in language and writing, and has written for various blogs and magazines.