A Unified Framework of Meta-Analytic Databases
Metapsy implements the concept of a “meta-analytic research domain” (MARD) for psychological interventions. We provide access to “living” databases that cover an entire research field, and are therefore broader than what can be covered by a single systematic review.
Our goal is to provide up-to-date data on the effects psychotherapy compared to various control groups and alternative treatments, and across all major mental disorders.
Documentation, Versioning & Indexing
All meta-analytic databases included in Metapsy are provided with rich metadata, in which the study search, extraction and coding steps are detailed. We also provide a detailed documentation for each database to increase transparency. All databases are versioned and archived on a public research data repository.
A Digital Object Identifier (DOI) is provided for all versions of each database, which can be used to unambiguously reference each database (and its specific version).
Simplified versions of all databases can be explored using the online meta-analysis tool included in Metapsy. This tool allows to select clinical trial data of interest, analyze overall effects in real-time using state-of-the-art meta-analysis methods, and explore effect heterogeneity using subgroup tests and meta-regression models.
An improved version of the online meta-analysis tool is currently under construction and will be released soon.
Metapsy includes two R packages to simplify the use of the provided
data for researchers. The
metapsyData package can be used to download
all databases (and versions thereof) directly into an R environment. All data is
provided in a standardised format, and codebooks are provided
in the documentation. Using
metapsyTools, all databases can
be analyzed “out of the box” using state-of-the-art statistical methods. To export all
databases and metadata in a machine-readable format, the Metapsy API can be used.