Please answer questions #4-9.Thanks Instructions: Download and read this journal
ID: 3046530 • Letter: P
Question
Please answer questions #4-9.Thanks
Instructions: Download and read this journal article: Hepworth SJ, Schoemaker MJ, Muir KR, Swerdlow AJ, van Tongeren MJ, McKinney PA. Mobile phone use and risk of glioma in adults: case-control study. BMJ. 2006 Apr 15:332(7546):883-7. We learned that one of the advantages of case-control studies is that you can investigate multiple exposures. They did that in this study. For example, if you look in Table 2 on page 3, you can see many different exposure variables listed in the left column of the use." You don't need to consider the others. You will notice that one level of the variable "Frequency of use" is labeled "Not known." Please cross out that level of the variable in Table 20dds ratios and 95% confidence intervals for risk of gioma in relation to mobile phone exposure" Figures are numbers (percentages)of participants Contrels Frequency of use 56 (472 818 27 08 (526 9 (523 094 7810 113) So, for this homework you should consider that there are 964 cases instead of 966. Also, consider that the category "not known" was never included in the table or model. Notice also that they use the word "risk" in the table title. Technically, this should say "odds.Explanation / Answer
Two levels.
The given data collected from observation study.
The data regers to observational study draws inferences from a sample to a popuplation where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints.
The study belongs to backward directional.
The study is Retrospective.
They using incidence type of parameter for studying this test case.