Asked by cuiqun liang on Jun 10, 2024
Verified
A recent study found that screening for disease X led to increased survival.In the study,those who were screened were generally younger,healthier,and more aware of their health than those who were not screened.This makes it hard to evaluate whether the improvement in survivorship was due to the screening program or due to the characteristics of those who are screened.What is the name of this issue when evaluating the effect of a screening program?
A) Lead time bias
B) Overdiagnosis bias
C) Selection bias
D) Misclassification bias
E) Length-biased sampling
Selection Bias
The bias that occurs in research outcomes when the participants are not randomly chosen, potentially leading to skewed or unrepresentative outcomes.
Survivorship
Refers to the health and life span of individuals following a diagnosis and treatment of a disease, with particular emphasis on the period after the point of disease remission or cure.
Screening Program
A public health initiative designed to identify disease in a community early, before symptoms appear, through tests and assessments.
- Understand the concept of biases in epidemiological studies and their impact on results.
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Learning Objectives
- Understand the concept of biases in epidemiological studies and their impact on results.
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