1 | Page
Epidemiology Chapter 7 Questions and
Correct Answers/ Latest Update /
Already Graded
As an epidemiologist you are going to investigate the effect of a
drug suspected of causing malformations in newborn infants when
the drug in question is taken by pregnant women during the course
of their pregnancies. As your sample you will use the next 200 single
births occurring in a given hospital. For each birth a medication
history will be taken from the new mother and from her doctor; in
addition, you will review medical 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.
, 2 | Page
Suppose that a relative risk of 0.5 has been found.
Ans: The risk of congenital mal formations is half as high among users of
the drug as among non-users.
Use of the drug is a protective factor for congenital malformations
(A and D)
True or False? Survival curves may be used to portray patients'
survival in clinical studies.
Ans: True
True or False? Relative risk is the ratio of the risk of disease among the
exposed to the risk among the unexposed.
Ans: True
Regarding the RR reported above, which statement is correct?
Epidemiology Chapter 7 Questions and
Correct Answers/ Latest Update /
Already Graded
As an epidemiologist you are going to investigate the effect of a
drug suspected of causing malformations in newborn infants when
the drug in question is taken by pregnant women during the course
of their pregnancies. As your sample you will use the next 200 single
births occurring in a given hospital. For each birth a medication
history will be taken from the new mother and from her doctor; in
addition, you will review medical 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.
, 2 | Page
Suppose that a relative risk of 0.5 has been found.
Ans: The risk of congenital mal formations is half as high among users of
the drug as among non-users.
Use of the drug is a protective factor for congenital malformations
(A and D)
True or False? Survival curves may be used to portray patients'
survival in clinical studies.
Ans: True
True or False? Relative risk is the ratio of the risk of disease among the
exposed to the risk among the unexposed.
Ans: True
Regarding the RR reported above, which statement is correct?
