Red meat and heart disease 4.1.25 In March 2012, an article titled \"Eating Red

Question

Red meat and heart disease 4.1.25 In March 2012, an article titled "Eating Red Meat Regularly 'Dramatically Increases The Risk Of Death From Heart Disease," appeared in the Daily Mail (www.dailymail. co.uk). The article was based on the findings of a study that followed over 120,000 men and women for almost 30 years, the data for which were analyzed by the Harvard School of Public Health in Boston. a. Identify the explanatory variable in this study. Also clas- sify this variable as categorical or quantitative. b. Identify the response variable in this study. Also classify this variable as categorical or quantitative. c. Identify a confounding variable that provides an alterna- tive explanation for the higher risk of death from heart disease among those who ate red meat regularly, com- pared to those who didn't.

Explanation / Answer

a. The explanatory variable is Eating of Red Meat on daily basis and it is a categorical variable.

b. The response variable is the Risk of Death from Heart Disease and it is a quantitative variable.

c. A confounding variable in the given situation is the rate of deaths from heart disease between those who eat red meat and those who don’t.

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