THERE are half a dozen research methodologies depending on how you should scientifically and systematically conduct your investigation, given the nature of your research questions. Whatever type of ...

Medical research is essential for advancing the understanding of health, diseases, and treatments. There are many types of studies that serve different purposes. Medical research, or health research, ...

Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...

If you are planning a research project, or just curious to learn more about research, you can use this guide to get an overview of some key terms. However, research methods vary hugely across ...

Interventional trials aim to find out more about a particular intervention or treatment. A computer puts people taking part into different treatment groups. This is so that the research team can ...

NICE public health guidance is informed by a variety of types of evidence (Lomas et al. 2005) (see section 1.5). This chapter describes some of the types of evidence reviews that the Centre for Public ...