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HLTH 503 EPIDEMIOLOGY STUDY GUIDE QUESTIONS AND ANSWERS
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HLTH 503 EPIDEMIOLOGY STUDY GUIDE QUESTIONS AND ANSWERS
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HLTH 503 Epidemiology Study GuideTerms in this set (641)
An example of passive follow-up in cohort D. Collection and maintenance of data by the federal government
studies is:
A. Telephone calls to study participants
B. Use of follow-up mailings
C. Use of written invitations to return to the
study site
D. Collection and maintenance of data by
the federal government
A major advantage of cohort studies over E. The permit direct estimation of risk of disease in those exposed to the suspected
case-control studies with respect to the factor
role of a suspected factor in the etiology of
a disease is that:
A. It is easier to obtain controls that are not
exposed to the suspected factor
B. They can be done on a double-blinded
basis
C. They can utilize a more representative
population
D. They take less time and are less costly
E> They permit direct estimation of risk of
disease in those exposed to the suspected
factor
Nested case-control studies: (Mark all that All of the above
apply)
A. Use subjects drawn from a cohort study
B. Provide a degree of control over
confounding
C. Reduce the cost of collecting exposure
information
,As an epidemiologist you are going to C. 150
investigate the effect of a drug suspected
of causing malformation in newborn infants
when the drug in question is taken by
pregnant women during the course of their
pregnancies. As a sample you will use the
next 200 single bites occurring in a given
hospital. For each birth a medication
history will be taken from new mother and
from her doctor; in addition, you will review
medial records to verify use of the drug.
[N.B.: These mothers are considered to
have been followed prospectively during
the entire course of their pregnancies,
because a complete and accurate record
of drug use was maintained during
pregnancy.]
The resultant data are:
Forty mothers have taken the suspected
drug during their pregnancies. Of these
mothers, 35 have delivered malformed
infants. In addition, 10 other infants are
born with malfunctions.
The number of individuals who both did
not take the drug and d
As an epidemiologist you are going to C. 14
investigate the effect of a drug suspected
of causing malformation in newborn infants
when the drug in question is taken by
pregnant women during the course of their
pregnancies. As a sample you will use the
next 200 single bites occurring in a given
hospital. For each birth a medication
history will be taken from new mother and
from her doctor; in addition, you will review
medial records to verify use of the drug.
[N.B.: These mothers are considered to
have been followed prospectively during
the entire course of their pregnancies,
because a complete and accurate record
of drug use was maintained during
pregnancy.]
The resultant data are:
Forty mothers have taken the suspected
drug during their pregnancies. Of these
mothers, 35 have delivered malformed
infants. In addition, 10 other infants are
born with malfunctions.
The relative risk between exposure to the
drug and malformatio
, A five- year prospective cohort study has B. One of the problems that this study may have faced is individuals lost to follow-up
just been completed. The study was during the five-year period
designed to assess the association
between supplemental vitamin A exposure
and mortality and morbidity for measles.
The RR for incidence of measles was 0.75
and the RR for measles mortality was 0.5.
Which statement is correct?
A. A cohort study is not a good design to
study this association because measles is a
very common disease
B. One of the problems that this study may
have faced is individuals lost to follow-up
during the five-year period
C. A cohort study is not an appropriate
study design in this case because the
association between one exposure and
two different outcomes is being
considered
True or False? Cohort studies preserve the True
temporality of cause (exposure) happening
before the effect (disease)
Practical considerations in the design of E. Age of the investigator
cohort studies do not usually include:
A. Follow-up issues
B. Size and cost of the cohort
C. Availability of exposure data
D. Scientific justification
E. Age of the investigator
An ambispective cohort study is also D. Historical prospective study
known as a:
A. Retrospective cohort study
B. Prospective cohort study
C. Nested case-control study
D. Historical prospective study
True or False? Repeated cross-sectional True
surveys may underestimate past smoking
behavior of older age cohorts
True or False? Survival curves may be used True
to portray patients' survival in clinical
studies
True or False? Relative risk is the ratio of True
the risk of disease among the exposed to
the risk among the unexposed.
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