Find a journal article that uses a chi-squared test (Pearson's test) to test for independence of two
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Question:
- Find a journal article that uses a chi-squared test (Pearson's test) to test for independence of two categorical variables (in a contingency table).
- Write the reference to the article (hint: can use pubmed.gov or a particular medical journal and search for "chi-squared test" and a specific disease or public health area that interests you),
- copy the contingency table into your homework,
- reproduce their p-value (show the STATA output and do by hand).
- What conclusion did the investigators draw? Did they use the correct statistical test? If not, did they come to the right conclusion?
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