This document contains a compilation of practice test for the NURSING board exam. This prep exam questions will improve your knowledge and understanding on NURSING topics.
TEST BANK FOR GORDIS
EPIDEMIOLOGY PRACTICE QUESTIONS
WITH SOLUTIONS
In a large case-control study of patients with pancreatic cancer, 17% of the patients
were found to be diabetic at the time of diagnosis, compared to 4% of a well-matched
control group (matched by age, sex, ethnic group, and several other characteristics) that
was examined for diabetes at the same time as the cases were diagnosed. It was
concluded that the diabetes played a causal role in the pancreatic cancer. This
conclusion:
a. Is correct
b. May be incorrect because there is no control or comparison group
c. May be incorrect because of failure to establish the time sequence between onset of
the diabetes and diagnosis of pancreatic cancer
d. May be incorrect because of less complete ascertainment of diabetes in the
pancreatic cancer cases
e. May be incorrect because of more complete ascertainment of pancreatic cancer in
nondiabetic persons - ANS-c. May be incorrect because of failure to establish the time
sequence between onset of the diabetes and diagnosis of pancreatic cancer
An investigator examined cases of fetal death in 27,000 pregnancies and classified
mothers according to whether they had experienced sexual intercourse within 1 month
before delivery. It was found that 11% of the mothers of fetuses that died and 2.5% of
the mothers of fetuses that survived had had sexual intercourse during the period. It
was concluded that intercourse during the month preceding delivery caused the fetal
deaths. This conclusion:
a. May be incorrect because mothers who had intercourse during the month before
childbirth may differ in other important characteristics from those who did not
b. May be incorrect because there is no comparison group
c. May be incorrect because prevalence rates are used where incidence rates are
needed
d. May be incorrect because of failure to achieve a high level of statistical significance
e. Both b and c - ANS-a. May be incorrect because mothers who had intercourse during
the month before childbirth may differ in other important characteristics from those who
did not
All of the following are important criteria when making causal inferences except:
a. Consistency with existing knowledge
b. Dose-response relationship
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