NR503 Midterm Exam : Population Health, Epidemiology & Statistical Principles>NR 503 updated
NR503 Midterm Exam : Population Health, Epidemiology & Statistical Principles>NR 503 updated

NR503 Midterm Exam : Population Health, Epidemiology & Statistical Principles

Question 1 The population of a city on February 15, 2005, was 36,600. The city has a passive

surveillance system that collects hospital and private physician reports of influenza cases every

month. During the period between January 1 and April 1, 2005, 2,200 new cases of influenza

occurred in the city. Of these cases, 775 persons were ill with influenza according to

surveillance reports on April 1, 2005. The monthly incidence rate of active cases of influenza for

the 3-month period was:

4 per 1,000 population

17 per 1,000 population

20 per 1,000 population

39 per 1,000 population

130 per 1,000 population

 Question 2 What would be the effect on age-specific incidence rates of uterine cancer if women

with hysterectomies were excluded from the denominator of incidence calculations assuming

that most women who have had hysterectomies are older than 50 years of age.

The rates in all age groups would remain the same.

Only rates in women older than 50 years of age would tend to decrease.

 Rates in women younger than 50 years would increase compared to women older than 50

years of age.

Rates would increase in women older than 50 years of age but may decrease in younger

women as they get older.

It cannot be determined whether the rates would increase or decrease.

Question 3 The ability of a single person to remain free of clinical illness following exposure to

an infectious agent is known as:

Hygiene

Vaccination

Herd immunity

Immunity

Latency

Question 4 Which of the following reasons can explain why a person who did not consume the

infective food item got sick?

They were directly exposed to persons who did eat the infective food item Diarrhea is a general

symptom consistent with a number of illnesses

There may have been an inaccurate recall of which foods were eaten

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Version latest
Category Exam (elaborations)
Release date 2021-09-25
Pages 13
Language English
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