Use this information to answer questions 14-17. You are interested in looking at
ID: 143932 • Letter: U
Question
Use this information to answer questions 14-17. You are interested in looking at the effects of folic acid supplementation during pregnancy. Your research team provides you with the following table This in NOT a 2 x 2 table Annual Death Rates per 100,000 Outcome 82 Outcome #1 Neural Tube Defects Premature Births No Folic acid 633 725 (Exposed) Folic acid 579 4. Calculate the risk difference for no folic acid supplementation on Neural Tube Defects. (1 point) 5. Calculate the risk difference for no folic acid supplementation on premature births. (1 point) 16. Interpret in words the meaning of the two risk differences above. (2 points) 17. What is the proportion of neural tube defects among those that received no folic acid supplementation that would be eliminated if supplementation were given? (1 point) 18. What is the proportion of premature births among those that received no folic acid supplementation that would be eliminated if supplementation were given? (1 point)Explanation / Answer
The question is basically asking the ratio of no. of premature births that can be eliminated by folic acid supplementation to the total no. of premature births without folic acid supplementation.
From the given data, No. of premature births that can be eliminated = No. of premature births without folic acid supplementation - No. of premature births with folic acid supplementation
No. of premature births that can be eliminated = 725 - 579 = 146
The required proportion =( No. of premature births that can be eliminated using folic acid supplementation ) / (Total no. of premature births without folic acid supplementation)
required proportion = 146 / 725
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