A new screening program was instituted in a certain country. The program used a screening test that is effective in detecting cancer Z at an early stage. Assume that there is an effective treatment for this type of cancer and, therefore, that the program results in a change in the usual course of the disease (decrease in death due to the cancer). Assume also that the rates noted are calculated in the quality of death certification of this disease. A. During the first year of this program will the incidence rate of cancer Z increase, decrease, or remain constant? B. During the first year of this program will the prevalence rate of cancer Z increase, decrease, or remain constant? C. During the first year of this program will the case-fatality rate of cancer Z increase, decrease, or remain constant? D. As a result of this program, will the mortality rate from cancer Z in the country increase, decrease, or remain constant?
A new screening program was instituted in a certain country. The program used a screening test that is effective in detecting cancer Z at an early stage. Assume that there is an effective treatment for this type of cancer and, therefore, that the program results in a change in the usual course of the disease (decrease in death due to the cancer). Assume also that the rates noted are calculated in the quality of death certification of this disease.
A. During the first year of this program will the incidence rate of cancer Z increase, decrease, or remain constant?
B. During the first year of this program will the prevalence rate of cancer Z increase, decrease, or remain constant?
C. During the first year of this program will the case-fatality rate of cancer Z increase, decrease, or remain constant?
D. As a result of this program, will the mortality rate from cancer Z in the country increase, decrease, or remain constant?
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