more EAB questions

Question 1

Answer 1

A

Question 2

Answer 2

A

Question 3

Answer 3

D

Question 4

Answer 4

C

Question 5

Answer 5

B

Question 6

Answer 6

D

Question 7

Answer 7

D

Question 8

Answer 8

D

Question 9

Answer 9

C

Question 10

Which of the following is not an attribute to confounding? Differences in:
a. Age
b. Gender
c. Health status
d. Socioeconomic status

Answer 10

D

Question 11

On which of the following does the critical value for a chi-square statistic rely?
a. The degrees of freedom
b. The sum of the frequencies
c. The row totals
d. The number of variables
e. The type of data

Answer 11

A

Question 12

Q28. Randomised, controlled trials provide strong evidence that an observed effect is due to the intervention (the assigned exposure). One reason is because
a. when the participants are randomised, many characteristics and possible confounding factors are likely to be evenly distributed in the groups.
b. it is easier to measure the outcome variable with great precision in randomised, controlled trials compared to in other study designs.
c. the exposure level and the outcome are measured at the same time.
d. The study participants are volunteers and therefore motivated to take part in the study.

Answer 12

D

Question 13

We wish to estimate the mean weight in a sample of patients, how can the precision of the estimate best be described?

A. Precision is greater if mean weight is greater
B. Precision is greater if the standard deviation is greater
C. Precision is greater if the standard error is greater
D. Precision is greater if the population size is greater
E. Precision is greater if the sample size is greater

Answer 13

B

Question 14

A case-control study in babies showed that babies who were breastfed rather than being fed with infant formula developed fewer ear infections in childhood. How can the study best be described?
A. Babies were randomly allocated to be breastfed or receive infant formula
B. Children who developed ear infections were compared to those who did not develop ear infections with respect to their previous feeding regimens
C. Babies who were breastfed and babies who were fed with formula were followed to see if they later developed ear infections
D. Babies who were breastfed were less likely to develop ear infections as children E. Babies who were breastfed were followed up to see if they developed ear infections

Answer 14

B

Question 15

50. Individuals attending an inner city general practice are given a patient
    satisfaction questionnaire to complete before they leave the premises. How can
    the format of this study best be described?
    A. Case-control
    B. Cross-sectional
    C. Double blind
    D. Prospective
    E. Representative of the UK population

Answer 15

A