Problem Set 5.docx - Problem Set#5 PUBH 305 – Introduction to Epidemiology 1 The data shown below come from a case-control study of cigarette smoking

Problem Set 5.docx - Problem Set#5 PUBH 305 –...

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Problem Set #5 PUBH 305 – Introduction to Epidemiology 1. The data shown below come from a case-control study of cigarette smoking and lung cancer in British men: Daily cigarette consumption < 5 5-14 15-24 25-49 50+ Men w/ lung cancer 26 208 196 174 45 Controls 65 242 201 118 23 a. Estimate the risk of lung cancer to cigarette smokers in each category of daily consumption relative to the risk in men who never smoked or smoked less than 5 cigarettes per day (hint: create a separate 2 x 2 table for each category of daily cigarette consumption, with <5 being the “unexposed” category). b. Estimate the proportion of lung cancer among British males in this age group that could have been prevented if no man had ever smoked more than 4 cigarettes per day during his lifetime. 2. The following data came from a case-control study of hip and forearm fracture. Female residents of King County, WA, ages 50-74, who were treated for either of these conditions during a 2-year period by one of 59 orthopedists in the County (n = 320) were identified and interviewed regarding prior receipt of postmenopausal estrogen therapy. Similar information was obtained from a sample of King County women of the same ages (n = 567). The results were as follows:
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