2 (Total marks 20) A study was performed to investigate the association between obesity and the occurrence of lower body joint conditions (e.g., osteoarthritis, joint pain) in adults aged 40-60 years. The study randomly selected 1,000 individuals from medical records and assessed obesity status over a 10-year period, and the occurrence of lower body joint conditions was evaluated at the end of this period. The study found that among the 288 obese participants (BMI 30), 183 developed lower body joint conditions, and among the 712 non-obese participants (BMI <30), 143 developed lower body joint conditions. a. Based on the study findings, construct a 2 x 2 table for 1000 people showing the number of people that developed joint conditions in exposed group and number of people that developed joint conditions in non-exposed group over the study period. Label the exposure and outcome groups. Give your table a title in 15 words or less. (5 marks) Title: .................................................................................................................................................. Exposure Outcome ................................ ................................ Total ................................ ......... ......... ......... ................................ ......... ......... ......... Total ......... ......... 1,000 b. What would be the appropriate measure of frequency in this study? (1 mark) Answer: c. Calculate the appropriate measure of frequency (risk) of joint