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Medical researchers followed Swedish men for 30 years to see if there was any association between the amount of fish in their diet and prostate cancer ("Fatty Fish Consumption and Prostate Cancer", Lancet, June2001). Using the data tabled below, which one of the following statements is FALSE?  It is recommended that you use Minitab for this question.Prostate cancer          No YesFish consumption                   - never/seldom      110 14 - small part of diet 2420 201 - moderate part     2769 209 - large part            507 42Group of answer choicesIf there is no association between amount of fatty fish in the diet and prostate cancer then, for the study group, we would expect to observe 9.2 males who had prostate cancer and never/seldom included fatty fish in their diet.1.98% of the subjects never/seldom included fatty fish in their diet11.29% of those who never/seldom included fatty fish in their diet, contracted prostate cancer.Comparing this with 7.43% of the group, as a whole, who contracted prostate cancer we would recommend Swedish males to include more fatty fish in their diet if they want to minimize their risk of contracting prostate cancer.This is an observational study so the results should be interpreted with an awareness of possible sources of bias (e.g. reporting bias)When a chi-square analysis of this data was conducted, the chi-square value = 3.677. We therefore conclude that any association that we are observing is just due to sampling variation.

Question

Medical researchers followed Swedish men for 30 years to see if there was any association between the amount of fish in their diet and prostate cancer ("Fatty Fish Consumption and Prostate Cancer", Lancet, June2001). Using the data tabled below, which one of the following statements is FALSE?  It is recommended that you use Minitab for this question.Prostate cancer          No YesFish consumption                   - never/seldom      110 14 - small part of diet 2420 201 - moderate part     2769 209 - large part            507 42Group of answer choicesIf there is no association between amount of fatty fish in the diet and prostate cancer then, for the study group, we would expect to observe 9.2 males who had prostate cancer and never/seldom included fatty fish in their diet.1.98% of the subjects never/seldom included fatty fish in their diet11.29% of those who never/seldom included fatty fish in their diet, contracted prostate cancer.Comparing this with 7.43% of the group, as a whole, who contracted prostate cancer we would recommend Swedish males to include more fatty fish in their diet if they want to minimize their risk of contracting prostate cancer.This is an observational study so the results should be interpreted with an awareness of possible sources of bias (e.g. reporting bias)When a chi-square analysis of this data was conducted, the chi-square value = 3.677. We therefore conclude that any association that we are observing is just due to sampling variation.

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