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Old 03-05-2012
tyagee's Avatar
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Stats What study design?

I was doing extended matching set q and got confused on this one...

An investigator wants to establish the effect of a recent radiation leak from a nuclear plant, within a specific cohort.
(A) Cross-over study
(B) Single-blind study
(C) Double-blind study
(D) Meta-analysis
(E) Nonconcurrent prospective study
(F) Cross-sectional study
(G) Case report
(H) Case series report
(I) Case-control study

any idea?
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Old 03-12-2012
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h) case series ? - the group of people underwent irradiation?
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Old 03-12-2012
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What's the answer?
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Old 03-14-2012
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in specific chort then it may be cross-sectional study, effect of radiation at particular time
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Old 03-14-2012
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qbank says case-control that is prospective. cant figure out why they say so
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Old 03-14-2012
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Quote:
Originally Posted by tyagee View Post
qbank says case-control that is prospective. cant figure out why they say so
yes its right case control, bcoz in case control we study exposure and risk of exposure
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Old 03-14-2012
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Quote:
Originally Posted by usmlepak View Post
yes its right case control, bcoz in case control we study exposure and risk of exposure
It should be prospective case-control as the exposure is recent and you cant start with an effect here.
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Old 03-15-2012
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Quote:
Originally Posted by robinssmc View Post
It should be prospective case-control as the exposure is recent and you cant start with an effect here.
i can understand the exposure. but i think there is no effect to look. there will be effect in future time. i am getting confused.

can u explain in greater detail. thanks for input.
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Old 03-15-2012
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Yeh, thats what I meant- there is no effect here. We have a recent exposure and we go forward with a cohort following them over person-time to detect any effect compared to those that were not exposed. That's prospective case-control study design. But a poorly formed question- in my opinion!
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Old 03-15-2012
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Quote:
Originally Posted by robinssmc View Post
Yeh, thats what I meant- there is no effect here. We have a recent exposure and we go forward with a cohort following them over person-time to detect any effect compared to those that were not exposed. That's prospective case-control study design. But a poorly formed question- in my opinion!
thank you. why cant it be cohort study then?
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