Furthermore women who live in densely populated areas were more likely to have

Furthermore women who live in densely populated areas

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neighborhoods with higher than average population density. Furthermore, women who live in densely populated areas were more likely to have husbands who smoke. Assume that population density is otherwise unrelated to lung cancer incidence.7.Based on this scenario, draw a DAG assuming the null hypothesis is true for the effect of husband’s tobacco smoking on a woman’s lung cancer incidence.8.Based on the DAG, is there an association between husband’s smoking and lung cancer incidence? 9.Given the information above, can women selected from these Tai-Chi centers serve as a valid control group? Why or why not? 10.If you said yes to question 9, what steps would need to be undertaken in the analysis of the case-control data described above? 4
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EPI 201 Fall 2017 Page 5 of 5 DAG Practice Problems 5
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