Systematic sampling is straightforward and low risk, offering better control. However, it may introduce sampling errors and ...

The rise of internet polling makes it more feasible to publish estimates for Asian Americans. But these estimates offer a limited view. What does the migration to online polling mean for the country’s ...

Clinical trial samples collected for pharmacogenomic and future research are vital resources for the development of safe and effective drugs, yet collecting adequate, representative sample sets in ...

The “one big breakthrough” pattern suggests that total citation counts can mislead. A researcher with one highly-cited paper and several uncited ones may have a more impactful trajectory than one with ...

Outcome-dependent sampling designs are strategic methodologies in longitudinal research that prioritise the selection of study subjects based on observed outcomes. Rather than relying on random ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...