EPI EXAM 5 ACTUAL QUESTIONS AND ANSWERS
All of the following are measures of process of health care in a clinic except:
a. Proportion of patients in whom blood pressure is measured
b. Proportion of patients who have complications of a disease
c. Proportion of patients advised to stop smoking
d. Proportion of patients whose height and weight are measured
e. Proportion of patients whose bill is reduced because of financial need - CORRECT ANSWER✅✅B
The extent to which a specific health care treatment, service, procedure, program, or other intervention
does what it is intended to do when used in a community-dwelling population is termed its:
a. Efficacy
b. Effectiveness
c. Effect modification
d. Efficiency
e. None of the above - CORRECT ANSWER✅✅B
The extent to which a specific health care treatment, service, procedure, program, or other intervention
produces a beneficial result under ideal controlled conditions is its:
a. Efficacy
b. Effectiveness
c. Effect modification
d. Efficiency
e. None of the above - CORRECT ANSWER✅✅A
A major problem in using a historical control design for evaluating a health service using case-fatality
(CF) as an outcome is that if the CF is lower after provision of the health service was started, then:
a. The lower CF could be caused by changing prevalence of the disease
b. The lower CF may be a result of decreasing incidence
c. The lower CF may be an indirect effect of the new health service
, d. The CF may have been affected by changes in factors that are not related to the new health service
e. None of the above - CORRECT ANSWER✅✅D
In-Hospital Case-Fatality (CF) for 100 Men Not Treated in a Coronary Care Unit (CCU) and for 100 Men
Treated in a CCU, According to Three Clinical Grades of Severity of Myocardial Infarction (MI)
(Table)
The results shown are based on a comparison of the last 100 patients treated before the CCU was
installed and the first 100 patients treated within the CCU. All 200 patients were admitted during the
same month.
You may assume that this is the only hospital in the town and that the natural history of MI was
unchanged during this period.
5. The authors concluded that the CCU was very beneficial for men with severe MI and for those in
shock, because the in-hospital CFs for these categories were much lower in the CCU. This conclusion:
a. Is correct
b. May be incorrect because CFs were used rather than mortality rates
c. May be incorrect because of a referral bias of patients to this hospital from hospitals in distant tow -
CORRECT ANSWER✅✅D
A new screening program was instituted in a certain country. The program used a screening test that is
effective in detecting cancer Z at an early stage. Assume that there is no effective treatment for this type
of cancer and therefore that the program results in no change in the usual course of the disease.
Assume also that the rates noted are calculated from all known cases of cancer Z and that there were no
changes in the quality of death certification of this disease.
What will happen to the apparent incidence rate of cancer Z in the country during the first year of this
program?
a. Incidence rate will increase
b. Incidence rate will decrease
c. Incidence rate will remain constant - CORRECT ANSWER✅✅A
A new screening program was instituted in a certain country. The program used a screening test that is
effective in detecting cancer Z at an early stage. Assume that there is no effective treatment for this type
of cancer and therefore that the program results in no change in the usual course of the disease.
Assume also that the rates noted are calculated from all known cases of cancer Z and that there were no
changes in the quality of death certification of this disease.
All of the following are measures of process of health care in a clinic except:
a. Proportion of patients in whom blood pressure is measured
b. Proportion of patients who have complications of a disease
c. Proportion of patients advised to stop smoking
d. Proportion of patients whose height and weight are measured
e. Proportion of patients whose bill is reduced because of financial need - CORRECT ANSWER✅✅B
The extent to which a specific health care treatment, service, procedure, program, or other intervention
does what it is intended to do when used in a community-dwelling population is termed its:
a. Efficacy
b. Effectiveness
c. Effect modification
d. Efficiency
e. None of the above - CORRECT ANSWER✅✅B
The extent to which a specific health care treatment, service, procedure, program, or other intervention
produces a beneficial result under ideal controlled conditions is its:
a. Efficacy
b. Effectiveness
c. Effect modification
d. Efficiency
e. None of the above - CORRECT ANSWER✅✅A
A major problem in using a historical control design for evaluating a health service using case-fatality
(CF) as an outcome is that if the CF is lower after provision of the health service was started, then:
a. The lower CF could be caused by changing prevalence of the disease
b. The lower CF may be a result of decreasing incidence
c. The lower CF may be an indirect effect of the new health service
, d. The CF may have been affected by changes in factors that are not related to the new health service
e. None of the above - CORRECT ANSWER✅✅D
In-Hospital Case-Fatality (CF) for 100 Men Not Treated in a Coronary Care Unit (CCU) and for 100 Men
Treated in a CCU, According to Three Clinical Grades of Severity of Myocardial Infarction (MI)
(Table)
The results shown are based on a comparison of the last 100 patients treated before the CCU was
installed and the first 100 patients treated within the CCU. All 200 patients were admitted during the
same month.
You may assume that this is the only hospital in the town and that the natural history of MI was
unchanged during this period.
5. The authors concluded that the CCU was very beneficial for men with severe MI and for those in
shock, because the in-hospital CFs for these categories were much lower in the CCU. This conclusion:
a. Is correct
b. May be incorrect because CFs were used rather than mortality rates
c. May be incorrect because of a referral bias of patients to this hospital from hospitals in distant tow -
CORRECT ANSWER✅✅D
A new screening program was instituted in a certain country. The program used a screening test that is
effective in detecting cancer Z at an early stage. Assume that there is no effective treatment for this type
of cancer and therefore that the program results in no change in the usual course of the disease.
Assume also that the rates noted are calculated from all known cases of cancer Z and that there were no
changes in the quality of death certification of this disease.
What will happen to the apparent incidence rate of cancer Z in the country during the first year of this
program?
a. Incidence rate will increase
b. Incidence rate will decrease
c. Incidence rate will remain constant - CORRECT ANSWER✅✅A
A new screening program was instituted in a certain country. The program used a screening test that is
effective in detecting cancer Z at an early stage. Assume that there is no effective treatment for this type
of cancer and therefore that the program results in no change in the usual course of the disease.
Assume also that the rates noted are calculated from all known cases of cancer Z and that there were no
changes in the quality of death certification of this disease.
