ACCURATE ANSWERS
A case-control study is an experimental study design.
True
False correct answer False
A epidemic curve can be used to describe which of the following characteristics of
health-related states and events?
Person
Place
Time
All of the above correct answer Time
A new preoperative bathing product is studied to see if it is associated with a
reduction in surgical site infections in hospitalized older adults. The relative risk of
a surgical site infection was 1.11 [95% CI: 0.97, 1.24] in the intervention group.
This risk statistic means that
There is not an increased risk of infection in the intervention group.
The risk of an infection was reduced by 11%.
There is a significant difference between the groups.
There a decreased risk of infection in the intervention group. correct answer
There is not an increased risk of infection in the intervention group
,A positive screening test for a disease indicates that a person either has a the
disease now or will eventually develop the disease in the future.
True
False correct answer False
A proportion is a simple count of the number of people in the population with a
disease or health-related condition.
True
False correct answer False
A prospective cohort study examines sodium intake and the subsequent
development of hypertension. The relative risk of hypertension in people with
high sodium diets is 2.1 [CI: 1.4-2.8]. The researcher should conclude
There is a significantly increased risk of hypertension in people with high sodium
diets.
There is not a significantly increased risk of hypertension in people with high
sodium diets.
There is an increased risk of hypertension in people who consume a high sodium
diet but the risk is not statistically significant.
The risk of hypertension cannot be determined with the information provided.
correct answer There is a significantly increased risk of hypertension in people
with high sodium diets
A prospective cohort study of the effect of human milk (mother's milk) feeding of
premature infants in the Neonatal Intensive Care Unit finds that the risk ratio for
developing sepsis during the infant's hospital course was 0.92 [95% CI: 0.85, 0.99]
, for infants who received their own mother's milk compared to infants who
received infant formula. This finding indicates that
Human milk feeding increases the risk of sepsis.
Human milk feeding decreases the risk of sepsis.
Human milk feeding has no impact on sepsis.
The impact of human milk feeding cannot be determined from this type of study.
correct answer Human milk feeding decreases the risk of sepsis
A ratio always includes a measure of time.
True
False correct answer False
A risk factor is a behavior or exposure that causes a disease or injury.
True
False correct answer False
A risk factor is an event or characteristic that is associated with a disease, but is
not necessarily a cause of the disease.
True
False correct answer True
A spot map is used for which of the following activities? (SELECT ALL THAT APPLY)
Displaying the time of the exposure for each of the cases.