HPR 350 HPR350 WEEK 4 QUIZ ANSWERS - ASHFORD
HPR 350 Week 4 Quiz Answers (Ashford)
Question 1
1 / 1 pts
The term attributable risk is also known as the rate difference or risk difference.
True
False
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
The population etiologic fraction is a measure of the proportion of the disease rate in a population attributable to the exposure of interest. This measure of effect is influenced by __________________.
the relative risk of the disease in exposed individuals versus unexposed individuals
the prevalence of the disease in the population
the prevalence of the exposure in the population
A and B
A and C
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among smokers. The death rate per 100,000 for coronary thrombosis is 422 among non-smokers and 599 among smokers. The prevalence of smoking in the population is 55%. Among smokers, the etiologic fraction of disease due to smoking is _________________________
0.90 for lung cancer and 0.88 for coronary thrombosis.
0.90 for lung cancer and 0.29 for coronary thrombosis.
0.89 for lung cancer and 0.88 for coronary thrombosis.
0.89 for lung cancer and 0.29 for coronary thrombosis.
cannot be determined from the information provided.
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Measure of the difference between two rates (for example, incidence rates) between exposed and nonexposed populations.
Rate difference
Attributable risk
Prevalence difference
Risk difference (also, attributable risk)
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Studies with a small sample size will most likely produce a small sampling error.
True
False
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Etiologic Fraction is defined as the proportion of the rate in the exposed group that is due to the exposure.
True
False
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
A causal association between factor and outcome can refer to____________________________.
Statistical independence
Secondary association
Indirect association
Direct association
Both C and D
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
A confidence interval is a statistical measure that most epidemiologists consider to be less meaningful than a point estimate.
True
False
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Small sample sizes may lead to clinically important/statistically significant results, and large sample sizes may lead to clinically unimportant/statistically insignificant results that are clinically important.
True
False
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Difference between the incidence rate of disease in the exposed group (Ie) and the incidence rate of disease in the nonexposed group (Ine): risk difference = Ie – Ine.
Rate difference
Attributable risk
Prevalence difference
Risk difference (also, attributable risk)
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
A measure of risk difference. In a cohort study, refers to the difference between the incidence rate of a disease in the exposed group and the incidence rate in the nonexposed group.
Rate difference
Attributable risk
Prevalence difference
Risk difference (also, attributable risk)
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Measure that computes the difference in prevalence between an exposed and nonexposed population (see Risk difference).
Rate difference
Attributable risk
Prevalence difference
Risk difference (also, attributable risk)
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
If it is accepted that an observed association is a causal one, an estimate of the impact that a successful preventive program might have been derived from a/an___________________________.
relative risk
higher life expectancy
attributable risk
prevalence rates
all of the above
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
Which of the following is not a factor of the statistical power of a study?
The magnitude of the effect
The study design
The sample size
The type of disease being studied
The answers to all of these questions in this quiz can be found in Chapters 9 “Measures of Effect” of the textbook.
1 / 1 pts
When assessing a positive relationship between alcohol consumption and oral cancer using a case-control study, increasing the sample size of the study will result in which of the following?
i. A lower p value
ii. A greater odds ratio
iii. A smaller 95% confidence interval
iv. A higher disease prevalence
i. A lower p value
ii. A greater odds ratio
iii. A smaller 95% confidence interval
iv. A higher disease prevalence
i and iii only
ii and iv only
i, ii, and iii only
All of the above
None of the above
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