National or international cohort studies that follow a large group of individuals over time to understand factors that lead to different outcomes. They are useful for studies that need a large amount ...
A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Among the tools that survey researchers use to gain a deeper understanding of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results