Stratify

Stratify refers to the process of dividing or categorizing something, such as data or a population, into different strata or layers. In the field of medicine, stratification is often used in epidemiology and research to ensure that data is representative of the population being studied.

Overview

Stratification in medicine is often used in clinical trials and epidemiological studies to ensure that the sample population is representative of the larger population. This is done by dividing the population into different strata, or layers, based on certain characteristics such as age, sex, or disease status.

Stratification can also be used in the analysis of data. For example, in a study investigating the effect of a new drug on blood pressure, the data might be stratified by age group to see if the drug has different effects in different age groups.

Stratification in Clinical Trials

In clinical trials, stratification is used to ensure that the trial population is representative of the larger population. This is done by dividing the population into different strata, or layers, based on certain characteristics such as age, sex, or disease status.

For example, in a clinical trial investigating a new drug for diabetes, the trial population might be stratified by age group, sex, and disease severity. This ensures that the trial population is representative of the larger population of people with diabetes, and allows for more accurate analysis of the trial results.

Stratification in Epidemiological Studies

In epidemiological studies, stratification is used to ensure that the study population is representative of the larger population. This is done by dividing the population into different strata, or layers, based on certain characteristics such as age, sex, or disease status.

For example, in an epidemiological study investigating the prevalence of heart disease, the study population might be stratified by age group, sex, and socioeconomic status. This ensures that the study population is representative of the larger population, and allows for more accurate analysis of the study results.

See Also

• Clinical trial
• Epidemiology
• Medical research
• Data analysis

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