Primary research

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Individual studies such as randomized controlled trials, cohort studies, case-control studies, cross-sectional studies, etc.

Any investigation study (or trial) that is designed to investigate a hypothesized cause-effect relation by modifying the supposed causal factor(s) in the study population. A trial is an umbrella term for a variety of designs, including uncontrolled trials, controlled trials and randomized controlled trials.

‘Original research’ in which data are first collected. The term ‘primary research’ is sometimes used to distinguish it from secondary research (reanalysis of previously collected data), meta-analysis and other ways of combining studies (such as economic analysis and decision analysis). However, because systematic reviews can provide answers not possible from individual studies they can also be considered to be primary research.

Also called primary level research.

Primary research Resources
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