Use the table below to answer questions 28-29 Ir Disease + 14 19 Disease- 674 1,

Question

Use the table below to answer questions 28-29 Ir Disease + 14 19 Disease- 674 1,115 Exposure Exposure - 28. (3 pts.) What is the prevalence of disease in the study? a. 1.2% b. 1.8% ?. 2.0% d. 37.8% e. 14 f 688 g. None of the above h. Cannot be determined with information provided 29. (3 pts.) What is the risk of disease for those exposed, in relation to those not exposed (assume an implied time component, equal for all participants)? a. 1.2 b. 14 c. 20.3 per 1,000 d. 424.2 per 1,000 e. None of the above f. Cannot be determined with information provided

Explanation / Answer

(28) right choice is b.1.8%

prevelance=100*(a+c)/N=100*(14+19)/(14+19+674+1115)=1.8

(29)right choice is a.1.2

required answer=(a/(a+b))/(c/(c+d))=(14/(14+674)/(19/(19+1115))=1.2

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