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The association between job-related exposure to welding fumes and chronic obstructive pulmonary disease (COPD) was explored in a case-control study. The following data were reported for 399 COPD patients: 37 currently employed as welders; the remainder had no occupational exposure.Among 800 controls, 48 were employed as welders.
1. Set up a 2 by 2 table and label it.
2. Identify and then calculate the appropriate measure of association.
3. Explain the calculated measure of association in a sentence.
4. What is the absolute risk of developing COPD among welders?
5. What is the prevalence of COPD among the population?
Revision:
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