65. The answer is c.
The prevalence rate is the total number of cases—new and existing—in a given population during a specific time period (in this case 1 year). It is a function of both incidence and duration. In other words, the higher the survival rate (duration) for a type of cancer, the higher its prevalence rate will be. CNPP, Page 45.
66. The answer is d.
More than 50% of all bladder cancer cases can be attributed to smoking. However, all four factors play some role in the development of bladder cancer. CNPP, Page 1228.
67. The answer is a.
The highest incidence of breast cancer is in non-Hispanic white women, less in African American women, and the lowest in Asian/Pacific Islander women. The incidence increases with age. ...