1. When identifying the association between amount of imported sugar and breast
ID: 128123 • Letter: 1
Question
1. When identifying the association between amount of imported sugar and breast cancer incidence using data from countries around the world, this a type of ?
A. case control study b. prospective cohort study c. ecological study d. retrospective cohort study
2. A screening test of high reliability would have high validity T or F
3.When a screening test has high sensitivity, its specificity would be high too? T or F
Which of the following methods is most efficient and economical when studying the causes of a rare disease?
a. cross- sectional study
b.case-control studay
c.cohort studay
d. experimental study
Which of the following Hill's criteria for causation is required in an established causal relation?
a. temporality
b.analogy
c. strength plausibility
d. biologic plausibility
Explanation / Answer
1. The correct option is b prospective cohort study. Because it is an analysis planned over a period of time and will be continued for analysis.
2. True. Because relaibility indicates that we are getting correct resulat and validity is the degree of correctness of the result we are getting for the thing we want to measure.
3. False. A highly sensitive test may not have high specificity. Because high sensitivity means any slight change can chaffect the result however it is not necessary that the change is specific.
4. Correct option is cohort study.
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