CHAPTER 4

Description

Please submit the answers to questions 5,6, and 8 from Chapter 4. Make sure to provide detailed explanation of your answer.

5.The incidence rate of a disease is five times greater in women than in men, but the preva-lence rates show no sex difference. The best explanation is that:
a. The crude all-cause mortality rate is greater in women
b. The case-fatality from this disease is greater in women
c. The case-fatality from this disease is lower in women
d. The duration of this disease is shorter in men
e. Risk factors for the disease are more common in women.

6.For a disease such as pancreatic cancer, which is highly fatal and of short duration:
a. Incidence rates and mortality rates will be similar
b. Mortality rates will be much higher than incidence rates
c. Incidence rates will be much higher than mortality rates
d. Incidence rates will be unrelated to mortality rates
e. None of the above

Question 8 is based on the information given below:
Annual Cancer Deaths in White Male Workers in Two Industries
INDUSTRY A INDUSTRY BCancer SiteNo. of Deaths% of All Cancer DeathsNo. of Deaths% of All Cancer DeathsRespiratory system180 33 248 45Digestive system160 29 160 29Genitourinary 80 15 82 15All other sites 130 23 60 11Totals 550 100 550 100

Based on the preceding information, it was con-cluded that workers in industry B are at higher risk of death from respiratory system cancer than workers in industry A. (Assume that the age distri-butions of the workers in the two industries are nearly identical.)
Which of the following statements is true?
a. The conclusion reached is correct
b. The conclusion reached may be incorrect because proportionate mortality rates were used when age-specific mortality rates were needed
c. The conclusion reached may be incorrect because there was no comparison group
d. The conclusion reached may be incorrect because proportionate mortality was used when cause-specific mortality rates were needed
e. None of the above