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In the 1970s, Danish researchers observed surprisingly low f

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In the 1970s, Danish researchers observed surprisingly low f [#permalink] New post 26 Feb 2017, 11:16
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Question Stats:

81% (03:37) correct 18% (02:27) wrong based on 11 sessions


In the 1970s, Danish researchers observed surprisingly low frequencies of heart disease among Greenland's indigenous populations that typically ate fatty fish, seals, and whales. The researchers attributed the protective effect to the foods' content of omega-3 fatty acids. Many studies of omega-3s have been conducted since, but their findings can be interpreted differently.

In 2006 the Institute of Medicine (IOM) issued a review of studies on seafood consumption, concluding that eating seafood reduces the risk of heart disease but judging the studies too inconsistent to decide if omega-3 fats were responsible. In contrast, investigators from Harvard published a very positive report, stating that even modest consumption of fish omega-3s would substantially reduce coronary deaths and total mortality.

Differences in interpretation explain how scientists examining the same studies could arrive at such different conclusions. The two groups, for example, had conflicting views of a study published in the British Medical Journal that found no overall effect of omega-3s on heart disease risk or mortality, although a subset of the data displayed a 14 percent reduction in total mortality that did not reach statistical significance. The IOM team interpreted the "nonsignificant" result as evidence of the need for caution, whereas the Harvard group saw the data as consistent with studies reporting the benefits of omega-3s.
It can be inferred that the author mentions a study published in the British Medical Journal primarily in order to
A) show how ambiguity in research reports may lead to unfounded recommendations
B) suggest that certain data dismissed as "nonsignificant" were in fact quite important
C) identify an error that led to discrepancies in researchers' conclusions
D) illustrate a difference in matters of interpretation
E) call into question the conclusions of two groups of researchers

[Reveal] Spoiler: OA
D


According to the passage, the report issued by the IOM and the explanation offered by the Danish researchers differed on the issue of whether
A) the consumption of omega-3 fatty acids was responsible for observed reductions in the risk of heart disease
B) the consumption of seafood has an effect on a person's likelihood of developing heart disease
C) seafood is a significant enough source of omega-3 fatty acids for its consumption to affect human health
D) factors other than diet are primarily responsible for determining a person's likelihood of developing heart disease
E) the frequency of heart disease among Greenland's indigenous populations could be related to diet

[Reveal] Spoiler: OA
A


Which of the following can be inferred from the passage about the "investigators from Harvard"?
A) Their conclusions were based on data that differed significantly from the data reviewed by the IOM.
B) Their conclusions about omega-3 fats were more tentative than those reached by the authors of the study published in the British Medical Journal.
C) They would likely agree with the explanation offered by the Danish researchers for why Greenland's indigenous populations displayed low frequencies of heart disease.
D) They would likely consider the report issued by the IOM to be incorrect about the value of seafood consumption but correct about the value of omega-3 fats.
E) They would likely argue that more research is needed before researchers can determine whether the consumption of omega-3 fats has a beneficial effect on human health.

[Reveal] Spoiler: OA
C


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Re: In the 1970s, Danish researchers observed surprisingly low f [#permalink] New post 08 Mar 2017, 03:39
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Explanation


1) The passage, actually, disentangle the difference of opinions based on researches by the Danish researchers and the IOM institute

2)
Quote:
In 2006 the Institute of Medicine (IOM) issued a review of studies on seafood consumption, concluding that eating seafood reduces the risk of heart disease but judging the studies too inconsistent to decide if omega-3 fats were responsible.


This sentence show how A is the answer. The others are out of scope or not mentioned

3)
Quote:
In contrast, investigators from Harvard published a very positive report,


Which means that researchers from Harvard actually agree with Danish's researchers
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Re: In the 1970s, Danish researchers observed surprisingly low f [#permalink] New post 13 Oct 2018, 04:58
1.D
2.A
3.C
Re: In the 1970s, Danish researchers observed surprisingly low f   [#permalink] 13 Oct 2018, 04:58
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In the 1970s, Danish researchers observed surprisingly low f

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