A dynamic population is one that adds new members through immigration and births and loses members through emigration and deaths.
Answer
True
False
Question 24
Descriptive epidemiology characterizes the amount and distribution of disease within a population to enable the epidemiologist to:
Answer
Test hypotheses regarding causality of disease
Generate testable hypotheses regarding etiology
Evaluate trends in health and disease within a population
The 2nd and 3rd answers only
All of the above
Question 25
When interpreting public health data from different sources, it is important to consider:
Answer
The amount of missing data
The population covered
Any changes in data collection methods
The 2nd and 3rd answers only
The 1st and 3rd answers only
All of the above
Question 26
A study collects information on occupation and blood pressure among current Mass Turnpike toll booth collectors and current Turnpike office workers. What type of study is this?
Answer
Case report
Case series
Ecological study
Cross-sectional study
Question 27
27)The Health Professionals Cohort Study began in 2005 in order to evaluate a series of hypotheses about men’s health relating nutritional factors to the incidence of serious illnesses such as cancer, heart disease, and other vascular diseases. Every two years, members of the study will receive surveys with questions about diseases and health-related topics like smoking, physical activity, and medications taken. The surveys that ask detailed dietary information will be administered in four-year intervals. What kind of cohort study is this?
Answer
Retrospective
Prospective
Ambidirectional
Question 28
Selection bias is most likely to occur in which type of study?
Answer
Prospective cohort studies
Retrospective cohort studies
Case-control studies
Both the 2nd and 3rd answers
.
Question 29
Interviewer/recording bias can occur in
Answer
Case-control studies only
Cohort studies only
Experimental studies only
Any type of epidemiologic study
Question 30
Differential misclassification can bias study results in which direction?
Answer
Toward the null
Away from the null
Either toward or away from the null