What is source population in epidemiology?

What is source population in epidemiology?

Source Population: The population from which the study subjects are drawn. Study Sample/Group: Consists of the indi- viduals (animals or groups of animals) that end up in the study.

How do you define a source of a population?

  1. A source population is a subset of a target population: it is a smaller population within a larger target population from which a sample is drawn.
  2. A study population is common term for a sample drawn from a source population: this is a confusing term because a “study population” is not a population, it’s a sample.

What is a source population example?

Generally speaking, the source population is the population from which your study subjects are drawn. In your example, that would be the 100,000 screened individuals under a specific assumption. Namely, that the screened population is an entire population.

What is the difference between study population and source population?

The study population is the collection of individuals that our sample actually represents and is typically those individuals we can feasibly study. The source population is the group of restricted interest about which the investigator wishes to assess an exposure-disease relationship.

What was the source of the study population?

The source population is the population from which the sample was taken, and therefore all members of this population should have a chance of being selected for inclusion in the study.

What is the difference between total population and target population?

Basically, target population (also known as theoretical population) is the group to whom we wish to generalize our findings. Study population (also known as accessible population) is the actual sampling frame, from which we randomly drew our sample.

What is the target population example?

The target population is the entire population, or group, that a researcher is interested in researching and analysing. Examples of a target population are a company’s customer base, the population of particular country, the students at a particular university or tenants of a housing association.

What are the two primary sources of population data?

Census and administrative records are two of the primary sources of population data.

What do you mean by primary source of population?

Primary population data collection sources: Data collected directly by a researcher or statistician or a government body via sources such as census, sample survey, etc. are called primary population data collection.

What is the difference between respondents and participants?

Respondent is one who answer/respond to questions(written/oral) or other stimuli. Participant is one who joins willingly to be part of the study as a subject.

What is the target population and its types?

In some types of research the target population might be as broad as all humans, but in other types of research the target population might be a smaller group such as teenagers, pre-school children or people who misuse drugs.

How do you explain target population?

Definition: A target population is a certain group of the population that share similar characteristics and is identified as the intended audience for a product, advertising or research. It is a portion of the whole universe of people selected as the objective audience.

How is the prevalence and incidence of a disease defined?

Prevalence and Incidence Defined. Prevalence refers to the total number of individuals in a population who have a disease or health condition at a specific period of time, usually expressed as a percentage of the population.

Which is the best definition of point prevalence?

Point prevalence is the proportion of a population that has the characteristic at a specific point in time. Period prevalence is the proportion of a population that has the characteristic at any point during a given time period of interest. “Past 12 months” is a commonly used period.

How is period prevalence different from lifetime prevalence?

Period prevalence is the proportion of a population that has the characteristic at any point during a given time period of interest. “Past 12 months” is a commonly used period. Lifetime prevalence is the proportion of a population who, at some point in life has ever had the characteristic. How is Prevalence Different from Incidence?

How is the prevalence of a sample determined?

For a representative sample, prevalence is the number of people in the sample with the characteristic of interest, divided by the total number of people in the sample. To ensure a selected sample is representative of an entire population, statistical ‘weights’ may be applied.