(2.16) Table 2.12 comes from one of the first studies of the link between lung cancer and smoking, by Richard Doll and A. Bradford Hill. In 20 hospitals in London, UK, patients admitted with lung cancer in the previous year were queried about their smoking behavior. For each patient admitted, researchers studied the smoking behavior of a noncancer control patient at the same hospital of the same sex and within the same 5-year grouping on age. A smoker was defined as a person who had smoked at least one cigarette a day for at least a year. Table 2.12. Data for Problem 2.16 Have Smoked Yes No Cases 688 21 709 Lung Cancer Controls 650 59 Total 709 Based on data reported in Table IV, R. Doll and A. B. Hill, Br. Med. J., 739-748, September 30, 1950. a) Identify the response variable and the explanatory variable. b) Identify the type of study this was. c) Can you use these data to compare smokers with nonsmokers in terms of the proportion who suffered lung cancer? Why or why not?
(2.16) Table 2.12 comes from one of the first studies of the link between lung cancer and smoking, by Richard Doll and A. Bradford Hill. In 20 hospitals in London, UK, patients admitted with lung cancer in the previous year were queried about their smoking behavior. For each patient admitted, researchers studied the smoking behavior of a noncancer control patient at the same hospital of the same sex and within the same 5-year grouping on age. A smoker was defined as a person who had smoked at least one cigarette a day for at least a year. Table 2.12. Data for Problem 2.16 Have Smoked Yes No Cases 688 21 709 Lung Cancer Controls 650 59 Total 709 Based on data reported in Table IV, R. Doll and A. B. Hill, Br. Med. J., 739-748, September 30, 1950. a) Identify the response variable and the explanatory variable. b) Identify the type of study this was. c) Can you use these data to compare smokers with nonsmokers in terms of the proportion who suffered lung cancer? Why or why not?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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