The incidence of ulcerative colitis in the U.S. is approximately 6 per 100,000 per year, the prevalence is about 100 per 100,000. The incidence of Crohn's disease in the U.S. is approximately 2 per 100,000 per year, the prevalence is about 30 per 100,000. The incidences of both diseases are higher in whites than in blacks, with an odds ratio of 2.0. Duration of the disease is similar in whites and blacks. This implies that in the U.S.

The incidence of ulcerative colitis in the U.S. is approximately 6 per 100,000 per year, the prevalence is about 100 per 100,000. The incidence of Crohn's disease in the U.S. is approximately 2 per 100,000 per year, the prevalence is about 30 per 100,000. The incidences of both diseases are higher in whites than in blacks, with an odds ratio of 2.0. Duration of the disease is similar in whites and blacks. This implies that in the U.S.

The most prevalent psychiatric disorder among opiate addicts undergoing treatment is

True statements about social determinants of health include all the following EXCEPT

What percentage of motor vehicle fatalities are associated with drivers who are legally intoxicated?

A study in which children are randomly assigned to receive either a newly formulated vaccine or the currently available vaccine, and are followed to monitor for side effects and effectiveness of each vaccine, is an example of which type of study? (Choose one wrong answer)