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You are interested in examining the efficacy of an intervention designed to improve nutrition education in low-income teen mothers. Which of the following study designs would be the best to use when trying to answer this question?

Which of the following sampling techniques can help control for a known a confounding variable?

A research study notes that 50% of individuals who are eligible for a study ultimately decided to not enroll. This study likely has an issue related to:

An IRB can conduct three types of review (full, expedited, and exempt). Only the IRB can determine whether a given application qualifies for full versus expedited; however, the investigator is allowed to determine when research is exempt. In cases when this determination is made, IRB review is not necessary.

When conducting participant observation, the researcher role of ______________ describes when the researcher conceals their identity (i.e., they do not tell anyone that they are a researcher or conducting research) and fully immerses themselves with a target group, taking part in the events/behaviors they are interested in studying. 

A research team has proposed a to conduct a clinical trial to investigate the efficacy of a new cholesterol drug. In describing the methods and justification for the trial, the authors note “This study will take place in a rural area of Guatemala. The results of this study are important because they can provide efficacy and safety data about this drug. This data will be submitted to the United States Food and Drug Administration, in order to support the release of this drug on the U.S. commercial market.” This study violates the Belmont Report ethical principle of _______ .

You work at a state public health agency and have been asked to determine whether a recent change in your state’s laws regarding alcohol taxes has an effect on alcohol sales in your state. Which of the following study designs would be the best to use when trying to answer this question?

In a “true” experiment, the ________ is what is manipulated by the researcher.

Observational research designs are best suited for:

The news has been filled with stories about the spread of a new disease. What study design would be the best choice if you wanted to study the factors that may be contributing to this outbreak?