Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 4.2, Problem 47BB
Relative Risk and Odds Ratio In a clinical trial of 2103 subjects treated with Nasonex, 26 reported headaches. In a control group of 1671 subjects given a placebo, 22 reported headaches. Denoting the proportion of headaches in the treatment group by pt and denoting the proportion of headaches in the control (placebo) group by pc, the relative risk is pt/pc. The relative risk is a measure of the strength of the effect of the Nasonex treatment. Another such measure is the odds ratio, which is the ratio of the odds in favor of a headache for the treatment group to the odds in favor of a headache for the control (placebo) group, found by evaluating the following:
The relative risk and odds ratios are commonly used in medicine and epidemiological studies. Find the relative risk and odds ratio for the headache data. What do the results suggest about the risk of a headache from the Nasonex treatment?
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In a clinical trial of 2198 subjects treated with a certain drug, 26 reported headaches. In a control group of 1661 subjects given a placebo, 22 reported
headaches. Denoting the proportion of headaches in the treatment group by p, and denoting the proportion of headaches in the control (placebo) group by Pc
the relative risk is p/pc. The relative risk is a measure of the strength of the effect of the drug treatment. Another such measure is the odds ratio, which is the
ratio of the odds in favor of a headache for the treatment group to the odds in favor of a headache for the control (placebo) group, found by evaluating
. The relative risk and odds ratios are commonly used in medicine and epidemiological studies. Find the relative risk and odds ratio for the
headache data. What do the results suggest about the risk of a headache from the drug treatment?
Pt/(1-Pt)
Pc/(1-Pc)
In a clinical trial of 2134 subjects treated with a certain drug, 27 reported headaches. In a control group of 1666 subjects given a placebo, 26 reported headaches. Denoting
the proportion of headaches in the treatment group by p, and denoting the proportion of headaches in the control (placebo) group by pe, the relative risk is p,/p.. The relative
risk is a measure of the strength of the effect of the drug treatment. Another such measure is the odds ratio, which is the ratio of the odds in favor of a headache for the
Pi/ (1-Pt)
Po! (1-Pc)
treatment group to the odds in favor of a headache for the control (placebo) group, found by evaluating
The relative risk and odds ratios are commonly used
in medicine and epidemiological studies. Find the relative risk and odds ratio for the headache data. What do the results suggest about the risk of a headache from the drug
treatment?
Find the relative risk for the headache data.
The relative risk =
(Round to three decimal places as needed.)
Find…
In a clinical trial of 2022 subjects treated with a certain drug, 21 reported headaches. In a control group of 1745 subjects given a placebo, 24 reported headaches. Denoting the proportion of
headaches in the treatment group by p, and denoting the proportion of headaches in the control (placebo) group by pe, the relative risk is p/pe. The relative risk is a measure of the strength of the
effect of the drug treatment. Another such measure is the odds ratio, which is the ratio of the odds in favor of a headache for the treatment group to the odds in favor of a headache for the
control (placebo) group, found by evaluating
Pt/(1-Pt)
The relative risk and odds ratios are commonly used in medicine and epidemiological studies. Find the relative risk and odds ratio for the
Pc/(1-Pc)
headache data. What do the results suggest about the risk of a headache from the drug treatment?
Find the relative risk for the headache data.
The relative risk = (Round to three decimal places as needed.)
Chapter 4 Solutions
Elementary Statistics
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