1. A screening test that has a low Predictive Value (+) and a high Predictive Va
ID: 128283 • Letter: 1
Question
1. A screening test that has a low Predictive Value (+) and a high Predictive Value (-) is more efficient in identifying
A. True positive B. True negative C. False positive D. False negative
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2. A screening test that has a high sensitivity and a low specificity is more efficient in identifying
A. True positive B. True negative C. False positive D. False negative
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3. The risk of a non-communicable chronic disease is best estimated by its
A. Prevalence rate B. Incidence rate C. Death rate D. Birth rate
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4.Typically a case control study starts from disease status while a cohort study starts from exposure status: T or F
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5.Which of the following study cannot be used to estimate the incidence rate of a disease in a place?
A. Case-control study B. Cohort study C. Experimental study D. All of the above can be used to estimate the incidence rate
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6.Which of the following Hil's criteria for causation is required in an established causal relation? A. Temporality B. Analogy C. Strength of association D. Biological plausibility
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7. Which of the following methods is most efficient and economic when studying the causes of a rare disease? A. Cross-sectional study B. Case tontrol study C. Cohort study D. Experimental study
Explanation / Answer
1.false positive.
2.true positive
3.death rate
4.true,case control study starts from outbreak of a disease,and case cohort study starts from exposure and risk of disease.
5.case control study does not estimate incidence rate.
6.strength of association:the larger the association the more likely it is causal
7.case control study
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