1- Which one of the following is true of ratios, proportions, and rates?
Select one:
a.Ratio is one number divided by another number (numerator doesn't have to be included in denominator—and vice versa)
b.Proportion is a ratio in which the numerator is included in the denominator
c.Rate is a ratio in which the numerator is the number of events and the denominator is the sum of follow-up time contributed by the people at risk of the event
d.All the above
e.Only A
2- Which of the following is true?
Select one:
a.Malaria is endemic in most places in tropic Sub Sahara Africa
b.An outbreak of anthrax affecting many people who live around a national park is an epidemic
c.Pandemics tend affect people across the globe
d.All the above
e.Only A and C
3- Which one of the following is a core function of epidemiology?
Select one:
a.Public Health surveillance
b.Evaluation
c.Policy development
d.Only A and B
e.All the above
4- In a study, over a period of two months, 5 out of 100 men aged 30-35 years old reported having migraine headaches. Over the same period, 20 of 100 women aged 30-35 years old reported having migraine headaches. In this study, the relative risk of women developing headaches compared to men was:
Select one:
a.20
b.5
c.4
d.2
5- False negatives in in screening test is an indicator of:
Select one:
a.People who test negative and they come from high social economic status
b.People who test negative and they don't have disease
c.People who test negative even though they really have disease
d.People who previously had a disease and have been treated
6- 100 students at a university in the U.S. become sick with flu over a three month period. What measure of occurrence does this statement describe?
Select one:
a.Prevalence
b.Incidence
c.Relative risk
d.Risk Difference
7- The following are uses of epidemiology:
Select one:
a.Investigation and control of a disease of unknown etiology
b.To study the natural history and prognosis of a disease
c.Planning, monitoring & assessment of disease control programs
d.Only A and B
e.All the above
8- In one of the countries there is an increase in the prevalence of HIV; this could be a consequence of:
Select one:
a.Increase in new cases of HIV
b.Prevention of death among cases of HIV
c.Prolonged life of HIV cases
d.Good screening of HIV cases
e.All the above
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