Liaison and Diversion Trial Schemes in England: an evaluation of impact on reconviction, health service utilisation and diversion from the criminal justice system

Study ID: 31,938
Short Title: Outcome evaluation of offender Liaison and Diversion trial schemes
Organisation: Southern Health NHS Foundation Trust
Location: Southern Health NHS Foundation Trust
Main Specialty: Mental Health
Expected End Date: 31/07/2017
Postcode: SO30 3JB
Contact Name: SHFT Research
Contact Email:
Active: Yes

Inclusion Criteria

L&D SERVICE USERS: Adult service users (both male and female) aged 18 and over who enter the L&D service at a research site during the recruitment period of the study and who have the capacity to consent for themselves will be considered for participation. Participants should all demonstrate the ability to understand fully what is proposed, and to use and weigh this information in reaching an independent decision. L&D SERVICE STAFF INTERVIEWS Purposively selected management and team leadership staff responsible for managing the delivery of L&D services at the 25 L&D sites during the research period.

Exclusion Criteria

L&D SERVICE USERS: - L&D service users aged under 18 - Service users who L&D practitioners deem not to have the capacity to provide informed consent. Capacity will be assessed by trained L&D practitioners, accustomed to providing support services to offenders with mental health and learning difficulties and to obtaining consent from them for a range of comparable matters. L&D SERVICE STAFF Staff without leadership or management responsibilities during the research period.

Study summary:

This project is an extended evaluation which aims to assess whether the National Model for L&D has any impact on reconviction rates, diversion from the criminal justice system or the use of health services, particularly, A&E, drug treatment, mental health treatment and outpatient services.

The evaluation aims to answer the following questions:
I. What impact, if any, does the implementation of the National Model of L&D have on reconviction?
II. What impact, if any, does the implementation of the National Model of L&D have on health service utilisation?
III. If any impacts on offending and health care utilisation are found, what is the economic effect of those?
IV. How have any impacts of the National Model of L&D been achieved?
V. What impact, if any, does the implementation of the National Model of L&D have on diversion from the criminal justice system?

This evaluation will make a contribution to the existing evidence as it will be the first to deploy a quasi-experimental design to look at impacts of L&D on reconviction, diversion from the criminal justice system and health service utilisation, and will be the only such evaluation into the National L&D Model.

The research team plan to undertake two kinds of comparisons of reconviction rates, diversion rates and health service use by L&D service users:
1. For service users in wave 1 and wave 2 sites, comparing reconvictions, diversion outcomes and use of healthcare services for 12 months before and 12 months after implementation of the L&D service.
2. For service users in wave 1 sites only, comparing their outcomes to those of a similar group of people who have not received the National Model L&D service.
The research team will supplement these quantitative comparative data with telephone interviews with staff in the 25 sites. In addition the research team will conduct an economic evaluation to estimate the short and longer term costs and outcomes of L&D services compared with no L&D services from the perspectives of the National Health Service (NHS), criminal justice system (CJS) and society in order to determine where there is a net benefit from this service.

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