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Assume that you begin a study of 100 persons free of disease on January 1, and that on the last day of each month throughout the year, we will be given a count of new cases of disease in this population. Assume that over the course of a full year, 10 of these persons develop disease, and that 2 of these cases were reported on March 31, 3 more cases on June 30, 3 cases on September 30, and 2 cases on December 31. How many person-months did all of the study members contribute?

The leading cause of death in the United States is…

Elevated blood concentrations of homocysteine represent an independent risk factor for the development of CVD, stroke and deep vein thrombosis. Which of the following prevents the accumulation of homocysteine in the blood?

In medical terminology the term “prevention” can relate to “primary”, “secondary”, or “tertiary.” Which of the following statements defines “primary prevention”?

Using the information from the question below, answer the next two questions.

The term “comorbidity” is defined as…

If an assessment technique is reliable it is also valid.

In the study on “Physical Inactivity and Short-term All-Cause Mortality in Adults With Chronic Disease”, only persons who had two or more of four identified chronic disease conditions were included in the final analysis. Which of the following was not one of the 4 chronic disease conditions?

One refers to illness and the other refers to death.

Population-attributable risk (when expressed as a percentage) can be more than 100%.