Determine if the prevalence will increase or decrease: Write a few sentences tha

Question

Determine if the prevalence will increase or decrease: Write a few sentences that explain the effect that the following situations would have on a population (assume other dynamics of the population do not change). 1. Immigration of cases (unhealthy persons) into the population. 2. Emigration of cases (unhealthy persons) out of the population. 3. Emigration of healthy persons out of the population. 4. Immigration of healthy persons into the population. 5. Increase in the fatality rate among the cases (unhealthy persons). Complete the calculations: 1. Compute the birth rate per 1, 000. 2. Compute the overall death rate per 100, 000. 3. Compute the infant mortality rate per 1, 000.

Explanation / Answer

Problem 10

1) When unhealthy people immigrate to the population, the total number of unhealthy individuals in the population increases. Hence, the prevalence also will increase.

2) If people having the diseases moves out of the area, it means that the total number of cases in the area will decrease. Hence, the prevalence decrease

3) If healthy population emigrate, it means that the proportion of unhealthy people in the population will increase. Hence, prevalence increases.

4) If healthy persons immograte, the total number of healthy persons in the area will increase. This will result in decreasing the prevalence.

5) if fatality rate of cases increase, it means the number of infected people in the area will decrease. Hece, prevalence will decrease.

Problem 11

1) Birth rate per 1000 = 4,065,014x1000/255,078,000 = 15.94

2) Overall death rate = 2,175,631x1000/255,078,000 = 8.53

3) infant mortality rate per 1000 = 34,553x1000/4,065,014 = 8.5

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