Which of the following statements is the most accurate description of the risk and relative risk of lung cancer deaths in this study? Use the following information: Lung Cancer and Coronary Health Disease Mortality by Smoking Status
$100,000\text { Age-adjusted death rates per } 100,000$
$700300\begin{array}{|l|l|l|}\hline & \text { Smokers } & \text { Nonsmokers } \\\hline \text { Lung cancer } & 150 & 70 \\\hline \text { Coronary heart disease } & 700 & 300 \\\hline\end{array}$

[Modified from Doll R,Peto R.Mortality in relation to smoking: 20 years' observations on male British doctors.Br Med J.1976;2(6051) :1525-1536.]

A) The risk of lung cancer deaths is 2.1 times greater in smokers compared with nonsmokers.
B) The risk of lung cancer deaths is 2.1 times less in smokers compared with nonsmokers.
C) Because investigators followed up participants over 20 years, deaths rate cannot be used as a risk.
D) The risk of lung cancer deaths among smokers is 70 per 100,000.
E) The risk of lung cancer deaths among nonsmokers is 150 per 100,000.

Question

Which of the following statements is the most accurate description of the risk and relative risk of lung cancer deaths in this study? Use the following information: Lung Cancer and Coronary Health Disease Mortality by Smoking Status

100,000\text { Age-adjusted death rates per } 100,000

700300\begin{array}{|l|l|l|}\hline & \text { Smokers } & \text { Nonsmokers } \\\hline \text { Lung cancer } & 150 & 70 \\\hline \text { Coronary heart disease } & 700 & 300 \\\hline\end{array}

[Modified from Doll R,Peto R.Mortality in relation to smoking: 20 years' observations on male British doctors.Br Med J.1976;2(6051) :1525-1536.]

A) The risk of lung cancer deaths is 2.1 times greater in smokers compared with nonsmokers.
B) The risk of lung cancer deaths is 2.1 times less in smokers compared with nonsmokers.
C) Because investigators followed up participants over 20 years, deaths rate cannot be used as a risk.
D) The risk of lung cancer deaths among smokers is 70 per 100,000.
E) The risk of lung cancer deaths among nonsmokers is 150 per 100,000.

Ramazan Attasauov · Accepted Answer

Final Answer : A, Explanation :   The risk of lung cancer deaths for smokers is 150 per 100,000 and for nonsmokers is 70 per 100,000. To find the relative risk, divide the risk for smokers by the risk for nonsmokers:   150 / 70 = 2.14 150 / 70 = 2.14 150/70 = 2.14  , which is approximately 2.1 times greater risk for smokers compared to nonsmokers.

Definitions

Learning Objectives

Learning Objectives

Related questions