An investigator conducts a study to determine whether there is an association between caffeine intake and Parkinson's disease. He assembles 230 incident cases of PD and samples 371 controls from the general population. After interviewing all subjects, he finds that 98 of the cases had high daily intake of caffeine (exposed) prior to diagnosis and 248 of the controls had low daily intake of caffeine (unexposed) prior to the date of the matched case's diagnosis. a. Assemble the 2x2 table for this study using the information given. b. Calculate the odds of being exposed among the cases. (round to 2 decimal places) c. Calculate the odds ratio for exposure among those with the disease compared to the odds of exposure for those without the disease. Show work and round to 2 decimal places. d. Interpret the odds ratio calculated. e. In a sentence or two, describe why sampling incident cases is better than sampling prevalent cases for a case-control study. Answer in your own words.