  Context: Open public data enable different stakeholders to perform analysis
and uncover information from different perspectives. The identification and
analysis of data from prison systems is not a trivial task. It raises the need
for the research community to know how these data have been produced and used.
Goal: Analyze prison systems data for the purpose of characterizing its use
with respect to data sources, purpose and availability. Method: We performed a
systematic mapping on existing evidence on prison systems original data from
peer-reviewed studies published between 2000 and 2019. Results: Out of the 531
records, 196 articles were selected from the literature. Conclusion: The vast
majority of the analyzed papers (75%) used restricted data. Only 18 studies
(9%) provided data, which hampers replication initiatives. This indicates the
need to analyze prison system in an integrated fashion, in which
multidisciplinary and transparency are relevant issues to consider in such
studies.
