Question

s Question Completion Status: QUESTION 65 Please complete the calculations for the following questions. You must correctly explicitly state the including the disease/outcome, the place of interest, and the time/duration or appropriate time units (for example: "Smokers had 5.2 times the odds of having lung cancer compared to non-smokers context of your answer by A 15 year follow-up study was conducted examining the relationship between environmental tobacco smoke (ETS) and developing a myocardial infarction (MI). ETS was measured based on whether a person had a smoker in the home. A total of 20,000 people reported having smokers in the home and another 22,500 did not. One hundred twenty new MI cases occurred among those with smokers in the home and 100 new Mi cases occurred among those who did not. Part 1: Calculate the cumulative incidence of MI among those with a smoker in the home. Be sure to give context. Part 2: Calculate the relative risk and interpret in a sentence. Part 3: Calculate the attributable risk and interpret in a sentence. Part 4: Calculate the attributable risk percent and interpret in a sentence Part 5: Calculate the odds ratio and interpret in a sentence. Part 6: Assume that 45% of people in Rhode Island have a smoker in the home. Calculate and interpret the population attributable risk in Rhode Island. Part 7: Calculate and interpret the percent population attributable risk in Rhode Island TTTT Paragraph ' Arial 3(12pt) . T.'.. ▼ ' Click Save and Submit to save and submit. Click Save All Answers to save all answers Save AN A

Answer 1

	MI	No MI	total
Smoker	120	19880	20000
Non smoker	100	22400	22500

1. Cumulative incidence of MI among smoker is =(120/20000)*100=0.6% that means the occurrence of new cases of MI among smoker is 0.6%
2. Relative risk of MI among smoker=(120/20000)/(100/22500)=1.35 means the risk of MI among smoker is 1.35 times of non-smoker.
3. Attributable risk=120/20000-100/22500=0.0015 means difference between risk of MI among smoker and non smoker is 0.0015
4. Attributable risk % =[(120/20000)-(100/22500)]*100=0.15% means that the risk percentage of MI differ between smoker and non smoker is 0.15%
5. Odds ratio=(120/19880)/(100/22400)=1.352 means that smokers are 1.352 times more likely have MI compared to non-smoker.
6. Population attributable risk= (0.45*(1.35-1))/(0.45*(1.35-1)+1)=0.136 means proportion of MI occurrence in Rhode Island is 0.136 and that can be attributed to 45% of smoker.
7. Population attributable risk%=13.6% means 13.6% of MI occurred in Rhode island due to 45% of smokers.