Twenty-four-hour urine collection, as a gold standard method of measuring salt intake, is costly and resource consuming, which limits its use in monitoring population salt reduction programs. Our ...

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 – ...

While previous sections of this report have focused on the kinds of systematic biases that may be the largest worry when it comes to public opinion polls, the variance (or precision) of estimates is ...