Question

Hi, need help for this Question:

	Dementia	No Dementia
High Exposure	500	800
Low Exposure	300	1100

Based on the above Contingency Table, solve:
a. Value for Sample Odd Ratio and Sample Risk Ratio for Dementia between high Exposure and Low Exposure Group.

b. Which ones can be used as a good estimate of population odds ratios of dementia between high exposure and low exposure groups? Why? (Hint: Sample Odd Ratio or Sample Risk Ratio or none of them)
c. Assume there is an new incomplete contingency table that showed :

	Dementia	No Dementia
High Exposure	A	900
Low Exposure	B	1200

Given Information:

Sample odd ratio of dementia between high exposure and low exposure groups is 0.8. Therefore, what is the value of A and B?

Answer 1

No Damantia Damunia 300 SOo Hin Eapaue Lous E2paue 4 00 3 0 o 900 800 dementia Septo betwen Ralio Odd lo eopoe and high enpoura S00 800 Odds high oseas damantia in 300 low expoua = Odd olumatia roo 2. 29 OR - Jetween Sample bige Rsk Ralio far Lous clementia expaunagnj ond erpasure Risk of Ri e demunia high RR demenia eaOrare in (ous ebpowe. 30 The sampla ocdds good Papulation bet men ratio Odds timate ohmentia _hagheara becaus lous ard caleulate _sompbaPurfr. lorg. modir ate to ealimotox the welu Tatio popln

No Dementa Deminta A High opu I 2 00 Lou enposZe OR A O. 8 - 72 A > 12 0 3 A A wwrleax duplu pwiou enaicwaing. the dotal Cor tesl entangeny Goo t 200 A +R 3 B 2900 375 225 1