3. A researcher is interested in the relationship between periodontal disease and hypertension among patients visiting his hospital. In order to address this relationship, the researcher actively recruits patients from his record database to take part in an investigational study looking at the relationship between periodontal disease as an exposure and hypertension as the outcome of interest. The researcher successfully enrolls 614 patients, and follows them for a period of 1 year to ascertain incident cases of hypertension. However, during the analysis phase, the researcher is concerned about the racial disparity in his outcome. The researcher organizes the following RxC table to display the difference in hypertension by race. -'_ __ _ Asian American Hisanic American _ Total A) What type of study is being conducted here? Cohort study B) Conduct a formal test to determine if there is a signicant difference in the outcome between the various racial groups. Write out your null and alternative hypothesis, and interpret your results at 95% condence. It is a xi square test and it rejects the Ho because there is no association between the two groups C) Calculate the appropriate risk measure for each racial group using the \"Caucasian\" category as the reference group. R (AA-C)=1.91 RR(AsA-C)=1.80 RR (His-C)=2.13 D) Using your results in B and C, discuss the relationship between race and hypertension in the study. The caucasian group is at least risk