Exam MCQ Epidemiology

Exam MCQ Epidemiology
Epidemiology is concerned with ALL except the following

A. The health status of populated groups
B. The natural history of disease in individuals and group
C. The causation of diseases
D. The fact of historical medical development on current medical practices
E. The evaluation of the effectiveness of preventative interventions
The population at risk for prostate cancer is

A. The total population
B. The entire population over 55 years population of men over 55 are at greater risk
C. The entire male population but all men are at risk
D. The male population over 55 years
E. The male population over 55 years excluding men who have already had prostate cancer
The probability of getting the disease over a specified period of time is measured by period
prevalence prevalence = disease frequency, number of people with condition/ whole
A. True population
B. False period prevalence = disease frequency over a given time so from 2020-
2022
The incident rate is a measure of
A. Status of the disease in a population at a point of time Incidence rate refers to the
B. The proportion of the disease in the population due to the exposure number of new cases in your
C. The strength of association between the risk factor and the disease population during a specified
D. The rate of the disease occurrence during a period of time time period.
E. The proportion of the disease in the exposed due to the exposure
prevalence looks at the number
High case fatality rate from a disease will decrease the prevalence rate
A. True of people with a given disease
B. False if people die then there are
fewer people with the disease
Population attributable risk is a measure of so it will deceptively decrease
A. Disease occurrence
B. Probability of getting a disease during a period of time
C. The proportion of the disease in the population due to the exposure
D. The strength of association between the risk factor and the disease
E. The proportion of the disease in exposed due to the exposure
The excessive number of disease cases in the exposed group attributable to the exposure
is measured by not 100%
A. The odds ratio
B. The instant rate of exposed
C. The population attributable risk
D. The risk difference
Relative risk is a measure of

A. Disease frequency in a population
B. Probability of getting a disease during a period of time
C. The proportion of the disease in the population due to the exposure
D. The strength of association between the risk factor and the disease
E. The proportion of the disease in exposed due to the exposure
probability of an outcome in an exposed group

compared to an unexposed group.
In a study of 400 cases of lung cancer and 200 healthy controls the investigators found a
use of tobacco in 100 of the cases and in 20 of the controls the odds ratio is
A. Cannot be calculated
B. 4 (100 x 180)/(20 x 300)
C. 3
D. 10
E. 5 18,000/6000 = 3
Which of the following is true about cross-sectional studies

A. Can ascertain temporal relationship between the risk factor and the disease
B. Can estimate the incidence of the disease
C. Can estimate the prevalence of the disease cross sectional studies = observational study analysing
D. Use for testing epidemiologic hypotheses
a given population at a single point in time.
E. Suitable for studying rare disease
F. Restriction
G. A confounder must be associated with both exposure and disease
Following phrases and statements are true about one of the main analytical study designs
select the appropriate study type for each
cohort = studies incidence, causes and prognosis.
Suitable for studying rare diseases can be used to distinguish between cause and effect.
A. Cohort study B. Case control study
A true measure of risk can be obtained

Relatively few subjects are needed

Relatively quick to conduct

Not suited for studying diseases with long latency period

Used as a next research step for testing precisely defined hypotheses

It is possible to study many disease outcomes

Prone to recall bias

Confounding is a problem of
Best information on time relationship is obtained in

Matching is applied for controlling confounding in

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Exam MCQ Epidemiology

Epidemiology is concerned with ALL except the following

The population at risk for prostate cancer is

Relative risk is a measure of

probability of an outcome in an exposed group

Which of the following is true about cross-sectional studies

A true measure of risk can be obtained

Relatively few subjects are needed

Relatively quick to conduct

Not suited for studying diseases with long latency period

Used as a next research step for testing precisely defined hypotheses

It is possible to study many disease outcomes

Prone to recall bias

Best information on time relationship is obtained in

Matching is applied for controlling confounding in

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