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?
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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