Welcome to PRISMATIC





Note the PRISMATIC report of findings is currently with the NIHR for review. As soon as it is published we will circulate the report to our mailing list. If you would like to be added to this circulation list please email prismatic@swansea.ac.uk

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Here you can find out more about the study, access study documents and find links to information on predictive risk tools and their potential role in helping to improve patient care.


PRISMATIC is a research study to investigate the effects of introducing a new predictive risk model (Prism) into GP practices. The study compares quality of patient care and health services use between GP practices with and without Prism.

The PRISMATIC study is taking place across Wales, but focusing on the Abertawe Bro Morgannwg University Health Board (ABM UHB) area in particular. All practices in ABM UHB have been invited to take part in the study.

This Swansea University led study will provide evidence regarding the effects on patient care and resources following Prism use across the Abertawe Bro Morgannwg University Health Board.  

The study will use Prism data, hospital data, patient questionnaires and feedback from practice and health board staff to address the key objectives:

Further details of the PRISMATIC study can be found on the Documents and Further Information page - or read the full study protocol here.

The study will finish in December 2015, when the report is submitted to the funder.


The study is funded by the National Institute for Health Research Health Services and Delivery Programme (project number 09/1801/1054).

Abertawe Bro Morgannwg University Health Board, the Welsh Government, NHS Wales Informatics Service, the Nuffield Trust, the BMA and GPC Wales have all contributed to the research development. NISCHR South West Wales Research Network is providing research support to the study, and to practices.

32 general practices in ABMU are taking part. Details of the practices are available here.


Prism is a web based predictive risk tool commissioned by the Welsh Government that stratifies people into four levels based on their individual risk of an emergency admission to hospital in the following 12 months. The Prism tool was developed and validated using 300,000 (10% of the Welsh population) anonymised GP and hospital records from which 37 variables with the highest predictive power were selected.

Identifying people in the community most vulnerable to emergency hospital admissions can enable effective early intervention and prevent the distress and disruption to the patient and their family caused by emergency admission. While tests have shown that the tool does identify people at risk, we don’t yet know the effect of such tools on patient care and resources – hence this study.

Information about Prism and risk prediction can be found through the Links page.




National UK survey of emergency admission risk tool users launched today (02/11/2015). Read more here.

Update: PRISMATIC Study report to be submitted to funder in December 2015.

Latest Newsletter released. Summer 2015. Take a look here.

18 month intervention period of study complete. Analysis and reporting now underway (February 2015)

GP expectations of Prism. See a presentation for the Society for Academic Primary Care Conference here (July 2014)

Prism roll out complete (February 2014)  All 32 study practices have now received Prism. Dates for each practice are available here

Prize Winners Drawn Congratulations to Mr Roland Govier of Swansea, who won the main prize in our questionnaire prize draw. Read more here.

Fantastic Questionnaire Response (March 2014). Over 1500 questionnaire returns so far. Read more here

Latest Newsletter (March 2014) Newsletter 6 See a copy here.

PRISMATIC makes the headlines! (14th November 2013) The study was featured as part of the lead story on BBC Wales Today. Read more here.

Care Quality Commission State of Care report for England shows 'avoidable' emergency admissions increasing See the report here.

QPI Guidance on risk profiling from Public Health Wales (PHW) – August 2013

QPI guidance from ABMU






For Enquiries About The PRISMATIC Research Project


Mark Kingston – Research Officer, Swansea University                     01792 606844

Sherry Jenkins – Study Administrator                                            01792 602346