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What is the Positive Predictive Value (PPV)?
What is the Positive Predictive Value (PPV)?
- Proportion of patients who test positive and do not have the disease
- Proportion of patients who test negative and actually have the disease
- Proportion of patients who test negative and do not have the disease
- Proportion of patients who test positive and actually have the disease (correct)
Why is a high Positive Predictive Value (PPV) essential for a successful screening program?
Why is a high Positive Predictive Value (PPV) essential for a successful screening program?
- It indicates a lower number of false-positive results
- It leads to a higher number of false-positive results
- It implies a higher detection rate of actual cases among individuals with positive results (correct)
- It indicates a lower detection rate of actual cases among individuals with positive results
What influences the Positive Predictive Value (PPV)?
What influences the Positive Predictive Value (PPV)?
- The number of individuals tested positively
- The progression of the disease in the population
- The prevalence of false-negative results
- The sensitivity and specificity of the screening test (correct)
What are the consequences of a low Positive Predictive Value (PPV)?
What are the consequences of a low Positive Predictive Value (PPV)?
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Which factor has a greater influence on the Positive Predictive Value (PPV)?
Which factor has a greater influence on the Positive Predictive Value (PPV)?
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What does a low Positive Predictive Value (PPV) imply for a screening program?
What does a low Positive Predictive Value (PPV) imply for a screening program?
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