While microplastic pollution continues to advance, research into its possible effects on health remains hampered by technical ...

Survey methodology encompasses the systematic approach to designing, administering and analysing surveys to ensure reliable and valid data. Central to this discipline is the optimisation of response ...

Pew Research Center’s experts provide analysis of trends shaping the world grounded in the Center’s rigorous empirical research. Because the Center is strictly neutral, its experts do not make policy ...

The data in this Pew Research Center report is drawn from a national cross-sectional survey conducted by Westat. The sampling design of the survey was an address-based sampling (ABS) approach, ...