Individual participant data


Individual participant data is raw data from individual participants, and is often used in the context of meta-analysis.
The International Committee of Medical Journal Editors has stated that sharing of deidentified individual participant data is an ethical obligation.

IPD meta-analysis

In an IPD meta-analysis, patient-level data from multiple studies or settings are combined to address a certain research question. IPD meta-analyses tend to be common for large-scale and international projects, and they are less limited than AD meta-analyses in terms of the availability and quality of data they can use. Due to the high level of precision and consistency this approach allows for, it is considered the gold standard of evidence synthesis.
Common aims for an IPD meta-analysis are
Over the past few decades, meta-analyses conducted with IPD have become increasingly popular.