What are the main observation indexes of cross-sectional study? What are its main advantages and disadvantages?

The main observation indexes of cross-sectional study are the prevalence and positive rate of exposure factors.

Its advantages mainly include:

1. The sample comes from the crowd, and the research results have strong promotion significance.

2. There are naturally formed contemporaneous controls in the survey population, which are comparable.

3. Various factors can be observed at the same time.

Disadvantages are:

1. Patients in the incubation period or remission period are easily misdiagnosed and biased.

2. Only the prevalence rate can be obtained, but not the incidence rate.

3. Generally, it is only applicable to the study of chronic diseases.

4. Diseases and factors exist at the same time, so it is impossible to determine the exact causal relationship.

Extended data

The purpose of cross-sectional study:

1. Describe the distribution of diseases or health conditions.

2. Evaluate the health level of a country or place.

3. Study the factors that affect people's health and are related to diseases.

4. Used for the research of health service demand.

5. Used to evaluate medical or preventive measures and their effects.

6. Used for the formulation and inspection of relevant health standards.

7. Used to check and measure the quality of past data.

8. For the formulation and evaluation of community health planning.

Baidu Encyclopedia-Cross-sectional Study