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A key consideration when evaluating a study’s __________ is whether the study’s sample is truly representative of the broader population.

What is a mediator variable in experimental research?

What is “masking” (previously called “blinding”)?

Measurement of LDL cholesterol as a study outcome would result in:

Which of the following is NOT a purpose of qualitative research?

True or False: The two important purposes of triangulation are confirmation and completeness.

A study is being designed to test the hypothesis that individuals with diabetes who have a history of substance abuse are less likely to monitor their insulin levels than individuals with diabetes without a history of substance abuse. Which sampling technique would work best in this situation?

When estimating necessary sample sizes, what is the minimum amount of statistical power generally accepted in the clinical trials literature?

A research paper describing the results of a randomized controlled trial notes that “intent-to-treat” analyses were used. This means that:

You want to design a new clinical trial, and want to know how many participants you need to recruit in order to detect a meaningful clinical difference between your intervention and a control condition. When estimating your necessary sample size, you need to consider your alpha level, the amount of power that you want to have to detect your effect, and your anticipated ________.