Study objective: To quantify the increase in mailed questionnaire response attributable to a monetary incentive. Design: A systematic search for randomised controlled trials of monetary incentives and ...

Always plan early for analysis. The Data Analysis Plan is your next step once the Analytical Framework for your assessment has been defined. It's important that the people conducting the analysis ...

The practice of female genital mutilation (FGM) is widespread in Nigeria. This study was conducted to assess the perceptions of FGM among mothers at a primary healthcare centre in Lagos, Nigeria. A ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Many of Pew Research Center’s survey analyses show relationships between two ...