This is the first of a series of articles that will describe the different types of study design; considerations when choosing a study design; and the advantages and disadvantages of each type of ...

Stability studies measure how medical devices respond to environmental stresses such as temperature, humidity, light, and ...

Cohort studies are a type of research design. They are also called longitudinal studies because they follow groups of people over time. Results from cohort studies can help people understand human ...

Noninferiority clinical trials have become a major tool for the evaluation of drugs, devices, biologics, and other medical treatments. Treatment with placebo or with a no-treatment control in a study ...

One of the claimed advantages of RBS surveys is their efficiency. Unlike RDD surveys, which rely on lists of potentially working telephone numbers, RBS surveys use lists of actual Americans. Despite ...

Medical research shapes healthcare every day, but not all studies are created equal. Knowing the differences can help you feel more confident reading health information online and understanding what ...

By Courtney Kennedy, Andrew Mercer, Scott Keeter, Nick Hatley, Kyley McGeeney and Alejandra Gimenez As the costs and nonresponse rates of traditional, probability-based surveys seem to grow each year, ...