举一反三
- Their study included 128 subjects who already were part of a ( ) study investigating risk factors for depression. A: lateral B: vertical C: longitudinal D: latitudinal
- Their study included 8 subjects who already were part of a ( ) study investigating risk factors for depression. A: lateral B: vertical C: longitudinal D: latitudinal
- Who took part in the study?
- We evaluated the associations between serum omega-3 and omega-6 poly-unsaturated fatty acid levels and colon cancer risk in a study conducted between 1997 and 2002. We included 363 cases of colon cancer and 498 disease-free controls. Serum omega-3 poly-unsaturated fatty acid levels were inversely associated with colon cancer risk. Subjects in the upper 33% of serum omega-3 poly-unsaturated fatty acids had a 33% lower risk of colon cancer as compared with subjects in the lower 33% of serum omega-3 poly-unsaturated fatty acids. In contrast, the risk of colon cancer was increased by omega-6 poly-unsaturated fatty acids by 68%. This is the first study that simultaneously finds an inverse association of serum omega-3 poly-unsaturated fatty acids and a positive association of omega-6 poly-unsaturated fatty acids with colon cancer. The study design is a:
- In his study Professor Smith asked the subjects _____.
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1.______Logic is the use and study of valid ______. The study of logic features most prominently in the subjects of philosophy,_______, and computer science
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The study is restricted by some limitation. ______, the population of the study included a sample from only one city, whereas other cities have not been tackled. ________, the study utilizes one instrument, mainly a questionnaire, while other instruments such as in-depth interviews and observation were not used.
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7. The risk of developing breast cancer in a certain population is 4%. A study investigating hormone replacement therapy finds that the hormone replacement therapy group has a 25% greater chance of getting breast cancer compared to the placebo group. Based on the study's finding, how many additional cases of breast cancer could one expect in a group of 100 women who undergo hormone replacement therapy compared with 100 who do not?
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In a study published by __________, some...d risk of mortality.
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In Australia, one can ______. A: study English separately B: study English along with other subjects C: study English as a fun and relaxation D: all of the above