Epidemiology Practice Assignment
Answer the following to that best of your knowledge and we will review in class.
An epidemiologist wants to study the causes of a rare cancer, which of the following study designs would it be best for him to use?
- Retrospective Cohort
- Prospective Cohort
- Cross Sectional
- Case-Control
An investigator is interested in understanding how roadside air pollution may cause COPD in older adults. She randomly samples older adults living in Los Angeles with residences near and far from major highways. She then follows the study participants for 15 years and records who develops COPD. What measure of effect should she use in her data analysis? Epidemiology Practice Assignment Help
- Odds Ratio
- Relative Risk
- Prevalence Ratio
- Prevalence Ratio
The main characteristic that distinguishes a clinical trial from a prospective cohort study design is which of the following?
- The follow-up time is short (ex. 2 years or less)
- Some study participants serve as the comparison group
- Study participants are randomized to receive or not receive the exposure
- Study participants are followed prospectively
Which of the following can introduce selection bias into a prospective cohort study?
- Restricting the target population to control for confounding
- Not randomly sampling the target population
- Having lost to follow-up in the study
- All answers are correct Epidemiology Practice Assignment Help
Which of the following 95% confidence intervals associated with a relative risk of 1.6 is most precise?
- 95% CI [ 1.2, 2.0]
- 95% CI [ 1.0, 2.2]
- 5% CI [ 1.0, 2.2]
- 95% CI [0.9, 2.3]
Which 95% confidence interval listed in Question 5 suggests the RR =1.6 is not statistically significant?
- 95% CI [1.1, 2.1] and 95% CI [0.09, 2.3]
- 95% CI [1.0, 2.2]
- 95% CI [1.0, 2.2] and 95% CI [0.09, 2.3] Epidemiology Question Assignment Help
- 95% CI[0.09, 2.3]
A 90% confidence interval is associated with which of the following p-values?
- 10
- p-values are not related to confidence intervals
- 05
- 90 Epidemiology Practice Assignment Help
With which of the following measures of effect can an epidemiologist not infer causality?
- Odds Ratio
- Prevalence Ratio
- Relative Risk
- Hazard Ratio
In which section of a journal article should a reader look for potential selection bias?
- Background/Introduction section
- Methods section-measurement of the exposure
- Results section-tables
- Methods section-measurement of disease
- Methods section-study population
In which section of a journal article should a reader look for potential misclassification of the exposure? Epidemiology Practice Assignment Help
- Methods section-study population
- Background/Introduction section
- Methods section-measurement of disease
- Methods section-measurement of the exposure
- Results section-tables
In which section of a journal article should a reader look for potential misclassification of the disease?
- Methods section-measurement of the exposure
- Methods section-measurement of the disease
- Methods section-study population
- Background/Introduction section
- Results section-tables
In which section of a journal article should a reader look for variable thought to be confounders by the authors? Epidemiology Practice Assignment Help
- Background/Introduction section
- Results section-tables
- Methods section-measurement of the exposure
- Methods section-study population
- Methods section-measurement of the disease
In which section of a journal article should a reader look for the authors’ hypothesis?
- Methods section-measurement of the disease
- Methods section-measurement of the exposure
- Background/Introduction section
- Methods section-study population
- Results section – tables
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