An investigator at the CDC wants to look at the relationship between children’s pre-natal exposure to environmental tobacco smoke (ETS) and its association with asthma diagnosis.           A study of 325 children produced the following results. HINT: This table should be rearranged.     ETS Exposure No ETS Exposure Total Asthma 100 50 150 No Asthma 25 150 175 Total 125 200 325 A. Calculate the risk (cumulative incidence) of Asthma in those children exposed to ETS.         B. Calculate the risk (cumulative incidence) of Asthma in those children not exposed to ETS. C. Calculate the relative risk of Asthma among those exposed to ETS as compared those not exposed to ETS and interpret.

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  1. Early life exposure to environmental tobacco smoke (ETS) or passive maternal smoking can result in developmental delay as well as childhood asthma and increased risk of cancer. A growing body of evidence has been generated indicating that the fetus, infant, and young child are especially susceptible to environmental toxicants as diverse as pesticides, mercury, lead, and environmental tobacco smoke (ETS). About 5 million children in the United States suffer from childhood asthma. This statistic has increased 160% over the last 15 years.  The United States Centers for Disease Control and Prevention (CDC) would like your help in trying to figure out why asthma rates, in particular, are on the rise?

 

An investigator at the CDC wants to look at the relationship between children’s pre-natal exposure to environmental tobacco smoke (ETS) and its association with asthma diagnosis.

 

        A study of 325 children produced the following results. HINT: This table should be rearranged.

 

 

ETS Exposure

No ETS Exposure

Total

Asthma

100

50

150

No Asthma

25

150

175

Total

125

200

325

A. Calculate the risk (cumulative incidence) of Asthma in those children exposed to ETS.

       

B. Calculate the risk (cumulative incidence) of Asthma in those children not exposed to ETS.

C. Calculate the relative risk of Asthma among those exposed to ETS as compared those not exposed to ETS and interpret.

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