Hi. I've been trying to figure out my public health stats homework for a few hours and decided to try to get some help here. I've written down the homework questions and provided the data needed from the table. I can't seem to figure out what is being asked of me. Thanks for any help.  QUESTIONS: Use the information in table 5 to answer the following questions. A. Suppose moms of both children with asthma and moms who have children without asthma misreported infant supplementation of cod liver oil. Twenty five percent of the moms that reported no cod liver oil supplementation actually sometimes gave their infants cod liver oil. 1. Create the corrected 2X3 table (show your work). 2. Recalculate all of the incidence proportions. 3. Recalculate the relative risks. 4. Did the misclassification under- or over- estimate the effect of cod liver oil on the development of asthma reported in the manuscript? 5. Is this an example of non-differential or differential misclassification? Why? B. Suppose moms of children that don’t have asthma over reported the use of vitamin D supplements. Twenty-five percent of those moms reported daily supplementation when they actually never gave vitamin D supplements to their infants. 6. Create the corrected 2X3 table (show your work). 7. Recalculate all of the incidence proportions. 8. Recalculate the relative risks. 9. Did the misclassification under- or over- estimate the effect of cod liver oil on the development of asthma reported in the manuscript? 10. Is this an example of non-differential or differential misclassification? Why?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 26PFA
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Hi. I've been trying to figure out my public health stats homework for a few hours and decided to try to get some help here. I've written down the homework questions and provided the data needed from the table. I can't seem to figure out what is being asked of me. Thanks for any help. 

QUESTIONS:

Use the information in table 5 to answer the following questions.

A. Suppose moms of both children with asthma and moms who have children without asthma misreported infant supplementation of cod liver oil. Twenty five percent of the moms that reported no cod liver oil supplementation actually sometimes gave their infants cod liver oil.

1. Create the corrected 2X3 table (show your work).

2. Recalculate all of the incidence proportions.

3. Recalculate the relative risks.

4. Did the misclassification under- or over- estimate the effect of cod liver oil on the development of asthma reported in the manuscript?

5. Is this an example of non-differential or differential misclassification? Why?

B. Suppose moms of children that don’t have asthma over reported the use of vitamin D supplements. Twenty-five percent of those moms reported daily supplementation when they actually never gave vitamin D supplements to their infants.

6. Create the corrected 2X3 table (show your work).

7. Recalculate all of the incidence proportions.

8. Recalculate the relative risks.

9. Did the misclassification under- or over- estimate the effect of cod liver oil on the development of asthma reported in the manuscript?

10. Is this an example of non-differential or differential misclassification? Why?

 

  Cases/total n
Vitamin D only  
No 1617/39343
Sometimes 152/3746
Daily 475/12053
  Cases/total n
Cod liver oil  
No 1095/25365
Sometimes 428/11579
Daily 721/18198
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