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Show one page at a time Finish review Final Exam
Started on Sunday, 06 December 2020, 06:12 PM
Completed on Sunday, 06 December 2020, 09:10 PM
Time taken 2 hours 57 mins
Grade38.00 out of a maximum of 50.00 ( 76%)
Q 1
Question 1
Having a model or framework for the different factors involved in disease causation:
Select one:
a. is important for understanding how a disease could be prevented. b. is always triangular.
c. only applies to infectious diseases.
d. emphasizes that environment is the most important issue.
Q 2
Question 2
Which of the following variables is often considered the most important factor in health studies?
Select one:
a. SES
b. Gender
c. Race
d. Age e. Place
Q 3
Question 3
If records showed that over the past thirty years the one-year cumulative incidence of a disease was stable, but the point prevalence appeared to be increasing, which of the following statements, would be the best explanation?
Select one: a. The duration of disease is becoming shorter.
b. The case-fatality rate of this disease is increasing.
c. Treatment (but not cure) for the disease is improving d. Efforts to prevent new cases of this disease are becoming more successful
e. The risk of the disease has decreased over the past 30 years.
Q 4
Question 4
In a meat processing plant with 1,200 employees in an impoverished county, records showed that there were 20 deaths over a one-year period. Analyses showed that in a similarly aged population (of the same size) in a nearby town, one would have only expected to see 16 deaths. How would one describe mortality at this plant in such a way as to account for the workers’ ages?
Select one:
a. As a mortality rate of 1.7%
b. As a mortality rate of 1667 per 100,000
c. SMR=125 d. SMR=66.7
e. You would need to know the person years at the plant.
Q 5
Question 5
An example of the observational unit in an ecological study might be any of these except:
Select one:
a. Hospitals
b. Individuals c. Counties
d. Continents
e. Calendar years
Q 6
Question 6
Which of the following is not an example of a vector in disease transmission?
Select one:
a. Ticks
b. Mosquitoes
c. Water d. Snails Q 7
Question 7
Which of the following statements describes a major advantage of randomly assigning study participants to the different treatment groups (i.e. randomization) in a clinical trial?
Select one:
a. It prevents information bias
b. It minimizes confounding c. It minimizes effect modification
d. It eliminates all ethical issues
e. It is most efficacious
Q 8
Question 8
Which of the following could be an appropriate null hypothesis?
Select one:
a. RR=1
b. RD=0
c. OR=1
d. All of the above are appropriate. Q 9
Question 9
Which of the following statements is false?
Select one:
a. Most diseases have multiple causes
b. A true causal factor may increase or decrease the chance of disease.
c. When there is no true association there is no causation.
d. When there is an association there must be causation. Q 10
Question 10
If 150 people with “the flu” were treated with an herbal ointment, and then within 3 days, >50% of these people no longer had symptoms, can one now claim that the herbal ointment was effective in treating the flu. Based on the evidence given here, this conclusion:
Select one:
Show one page at a time Finish review Final Exam
Started on Sunday, 06 December 2020, 06:12 PM
Completed on Sunday, 06 December 2020, 09:10 PM
Time taken 2 hours 57 mins
Grade38.00 out of a maximum of 50.00 ( 76%)
Q 1
Question 1
Having a model or framework for the different factors involved in disease causation:
Select one:
a. is important for understanding how a disease could be prevented. b. is always triangular.
c. only applies to infectious diseases.
d. emphasizes that environment is the most important issue.
Q 2
Question 2
Which of the following variables is often considered the most important factor in health studies?
Select one:
a. SES
b. Gender
c. Race
d. Age e. Place
Q 3
Question 3
If records showed that over the past thirty years the one-year cumulative incidence of a disease was stable, but the point prevalence appeared to be increasing, which of the following statements, would be the best explanation?
Select one: a. The duration of disease is becoming shorter.
b. The case-fatality rate of this disease is increasing.
c. Treatment (but not cure) for the disease is improving d. Efforts to prevent new cases of this disease are becoming more successful
e. The risk of the disease has decreased over the past 30 years.
Q 4
Question 4
In a meat processing plant with 1,200 employees in an impoverished county, records showed that there were 20 deaths over a one-year period. Analyses showed that in a similarly aged population (of the same size) in a nearby town, one would have only expected to see 16 deaths. How would one describe mortality at this plant in such a way as to account for the workers’ ages?
Select one:
a. As a mortality rate of 1.7%
b. As a mortality rate of 1667 per 100,000
c. SMR=125 d. SMR=66.7
e. You would need to know the person years at the plant.
Q 5
Question 5
An example of the observational unit in an ecological study might be any of these except:
Select one:
a. Hospitals
b. Individuals c. Counties
d. Continents
e. Calendar years
Q 6
Question 6
Which of the following is not an example of a vector in disease transmission?
Select one:
a. Ticks
b. Mosquitoes
c. Water d. Snails Q 7
Question 7
Which of the following statements describes a major advantage of randomly assigning study participants to the different treatment groups (i.e. randomization) in a clinical trial?
Select one:
a. It prevents information bias
b. It minimizes confounding c. It minimizes effect modification
d. It eliminates all ethical issues
e. It is most efficacious
Q 8
Question 8
Which of the following could be an appropriate null hypothesis?
Select one:
a. RR=1
b. RD=0
c. OR=1
d. All of the above are appropriate. Q 9
Question 9
Which of the following statements is false?
Select one:
a. Most diseases have multiple causes
b. A true causal factor may increase or decrease the chance of disease.
c. When there is no true association there is no causation.
d. When there is an association there must be causation. Q 10
Question 10
If 150 people with “the flu” were treated with an herbal ointment, and then within 3 days, >50% of these people no longer had symptoms, can one now claim that the herbal ointment was effective in treating the flu. Based on the evidence given here, this conclusion:
Select one:
