Loss of follow-up is a problem in most cohort studies and often introduces bias. It is a situation in which a researcher loses contact with a subject, resulting in missing data. Too many subjects failing follow-up diminish the internal validity of the study.
<h3>What is follow-up loss in cohort studies? </h3>
- Follow-up loss introduces bias (observed deviation of relevant measures from what would have been observed without bias) if there is a difference in the likelihood of loss due to follow-up related to exposure status and outcome.
- In the clinical research trials industry, loss due to follow-up is defined as patients who were actively participating in a clinical research trial at some point but who lost themselves (due to errors in the computer tracking system or due to unavailability).
- In cohort studies: 1) Imaging outcome, is loss of follow-up. 2) These are essentially prospective studies, so confounding factors are not an issue. 3) These studies help examine multiple outcomes from a single, infrequent exposure. 4) These are usually faster and cheaper than case-control studies.
<h3>What are advantage and disadvantages of cohort studies?</h3>
- In general, the main advantage of cohort studies is the ability to study multiple exposures and multiple endpoints in a single cohort. This recording allows you to select index groups, so you can explore rare recordings.
- A major weakness of cohort studies is that this type of study design can be time consuming and expensive for results that are rare or evolve over long periods of time. It's a question of research.
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Wealth gap or wealth inequality is the inadequate dispersal of assets among the residents in a specific country. It will get Economic growth will likely decline over time.
The answers are an imaginary audience for the boy and personal fable for the girl. Imaginary audience is a state mostly exhibited by adolescents, wherein they falsely believe that someone or everyone is watching his behavior fondly. Personal fable is the most distinct reason to explain the risk-taking actions and decisions of teenagers, in this stage, they focus on themselves more than they do towards others, also they assume they are invulnerable and invincible.
By matching each example to its corresponding stimulus or response, we have the following:
Unconditioned Response: vomiting;
- This is a condition or actions that occur without learning it. It is inborn.
Unconditioned Stimulus: food poisoning;
- This is a form of stimulus that results in a natural reaction without forcing it or intentionally doing it.
Conditioned Response: refusal to eat;
- This is a type of response that is learned. It is intentionally done by the subject.
Conditioned Stimulus: a taste of the chicken salad
- This is often considered a neutral stimulus initially but later turns to a learned response over time.
Hence, in this case, it is concluded that there are different forms of taste aversion experienced in living things, particularly humans and animals.
The available options are the following
Stimulus
- Unconditioned Response:
- Unconditioned Stimulus:
- Conditioned Response:
- Conditioned Stimulus:
Examples
- a taste of the chicken salad
- refusal to eat
- vomiting food poisoning
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