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Data First Prisoner Custodial Journey Dataset (PRIS)

Population Size

Not reported

Years

2011 - 2021

Associated BioSamples

None/not available

Geographic coverage

United Kingdom

Wales

Lead time

2-6 months

Summary

This dataset contains the data for Individuals serving custodial sentences in England & Wales who appear within records from the prison data source, p-NOMIS.

Documentation

The prisoner dataset extracts from the Prison National Offender Management Information System (p-NOMIS) and the Offender Assessment System (OASys), operational databases used in prisons for the management of offenders.

Tables: NOMIS - One record per prisoner per custodial journey (i.e. each separate instance that a person was in prison during the period, but combining connected spells in custody, remand and recalls) providing details around their personal characteristics, main offence, sentence length, and release information.

OASys - One record per prisoner per assessment (prisoners may have more than one assessment per custodial journey). The OASys data only includes OASys records that have been linked to an offender in the NOMIS dataset.

Safety in Custody - One record per prisoner per incident

Dataset type
Health and disease
Dataset sub-type
Not applicable
Associated media
https://popdatasci.swan.ac.uk/centres-of-excellence/sail/https://www.youtube.com/watch?v=ZK9-Jw3uVkwhttps://saildatabank.com/https://saildatabank.com/about-us/https://www.gov.uk/guidance/ministry-of-justice-data-first#moj-cross-justice-system-datasets

Keywords

SAIL, Justice, Crime & Justice, MOJ, RAP, core-res

Observations

Observed Node
Disambiguating Description
Measured Value
Measured Property
Observation Date

Events

Activities, Cases, and People

3000000

Count

29 Sep 2021

Provenance

Source of data extraction
Other
Collection source setting
Other
Patient pathway description
The person identifiers in the original data (offender_id and offender_id_display) are known to be unreliable and do not consistently and comprehensively allow the same offender (person) to be identified across distinct prison terms. While prison staff make an attempt to connect records to previous incarcerations at reception, many links are missed,

and sometimes records are connected erroneously.

The estimated_offender_id has been assigned by Data First using a statistical model and the open source splink software. This allows data users to see which individuals have re-entered prisons on multiple occasions. Identifiable personal information used to derive estimated_offender_id is not shared and hashes are created for other IDs that appear outside of this dataset.

Young Offenders are included if resident at prisons or Young Offender Institutes (YOIs) that use p-NOMIS.

Image contrast
Not stated
Biological sample availability
None/not available

Structural Metadata

Details

Publishing frequency
Irregular
Version
5.0.0
Modified

08/10/2024

Distribution release date

01/01/2022

Citation Requirements
Ministry of Justice

Coverage

Start date

01/01/2011

End date

29/09/2021

Time lag
Variable
Geographic coverage
United Kingdom, Wales, England
Maximum age range
120
Follow-up
Other

Accessibility

Language
en
Controlled vocabulary
LOCAL
Format
SQL Database Table

Data Access Request

Dataset pipeline status
Available
Access rights
https://saildatabank.com/data/apply-to-work-with-the-data/
Time to dataset access
2-6 months
Access request cost
Data provision is free from SAIL. Overall project costing depends on the number of people that require access to the SAIL Gateway, the activities that SAIL needs to complete (e.g. loading non-standard datasets), data refreshes, analytical work required, disclosure control process, and special case technological requirements.
Access method category
TRE/SDE
Access service description

The SAIL Databank is powered by the UK Secure e-Research Platform (UKSeRP). Following approval through safeguard processes, access to project-specific data within the secure environment is permitted using two-factor authentication.

Access for approved purposes and projects is to accredited researchers through the ONS Secure Research Service (SRS). The application form is available on gov.uk and governed by MoJ and HMCTS. Please see the application form guidance and the Data First user guide for more information on the process.

Jurisdiction
GB-WLS
Data use limitation
General research use
Data use requirements
Project-specific restrictions,Time limit on use,User-specific restriction
Data Controller
SAIL Databank
Data Processor
SAIL Databank

Dataset Types: Health and disease

Collection Sources: Other