The Primary Care Database User Group Meetings are open to all with an interest in electronic health record research, and are held in the Research Department of Primary Care and Population Health, located at the Royal Free Hospital. Directions can be found on our contact page. To sign up to the Primary Care Database User Group mailing list, please register on JISCMail

Primary Care Database User Group Meetings

Thursday 29th October, 3.30-5pm

Trends in diagnosis and prescribing for type 2 diabetes mellitus between 2000-2013: a retrospective cohort study using THIN

Manuj Sharma (UCL)

In this presentation, I will provide an overview of my first study as part of my PhD exploring changes in recording of diagnosis and prescribing of anti-diabetics for Type 2 Diabetes Mellitus using the Health Improvement Network (THIN), primary care database. I will provide background to the project, and in particular focus on some methodological challenges faced. I will also highlight some implications of the results of this project for future PhD work.

The association between glucose-lowering drug use and infection hospitalization and antibiotic use in patients with type 2 diabetes: a Danish nationwide population-based cohort study

Anil Mor (Aarhus University, Denmark)

In this presentation I will talk about the risk of hospital-treated infections and community antibiotic use associated with glycaemic exposure according to baseline HbA1c, latest current HbA1c, mean HbA1c, and weighted mean HbA1c. I will then talk about the risk of infections associated with initial glucose-lowering drug use in a Danish cohort.  

Previous seminars

7th September 2015

Rohini Mathur from LSHTM and Tra Pham from UCL presented work on the use of ethnicity data in primary care databases.

1st July 2015

Will Dixon from the University of Manchester gave a presentation on challenging the assumptions of data preparation and risk attribution in pharmacoepidemiology.

19th May 2015

Krishnan Bhaskaran from LSHTM presented work using primary care data from the Clinical Practice Research Datalink to study the association between body mass index and a wide range of cancers (Bhaskaran et al, Lancet 2014).

16th October 2014

Ruth Blackburn presented work using THIN to explore cardiovascular risk screening and statin prescribing to individuals with severe mental illness.

17th September 2014

Yonas Weldeselassie from the Open University gave a presentation on the self controlled case series (SCCS) method with smooth risk functions. More information on SCCS methodology.

1st July 2014

In a talk titled "Doctor, doctor, how can I be sure this medication is safe?", Irene Petersen discussed how electronic health records can and can't be used to examine the safety and effectiveness of prescribed medicine, in the light of the recent debate about the safety of commonly-used medication such as statins, hypnotics, and antidepressants.

26th March 2014

Liz Sampson and Rebecca Lodwick presented a study on: "Health outcomes and health service use of cohabitees living with terminally ill patients with cancer, chronic obstructive airways disease, and dementia", and Michael King and Louise Marston presented a study on: "Mortality and Medical Care after Bereavement: A General Practice Cohort Study".

11th December 2013

Gillian Hall, who has been involved in primary care database research from the very beginning, talked about the history of these databases, as well as guidelines and good practice when using them.

30th October 2013

Hedvig Nordeng from the University of Oslo talked about pharmacoepidemiological studies on medication use and safety during pregnancy.

22nd May 2013

Daniel Prieto-Alhambra gave a short introduction to the Catalan SIDIAP primary care database.

9th April 2013

Anoop Shah presented his Freetext Matching Algorithm (FMA), a program which can convert free text entered by clinicians into relevant Read codes. The program, and the paper describing the program, are available free and open access on BioMed Central.

5th February 2013

Our first PDUG meeting of 2013 featured a short presentation by Myriam Alexander on the exploration of multiple measurements of cardiovascular risk factors in THIN. This was followed by Laura Shallcross who presented some results of her PhD project on skin infections in primary care.

4th December 2012

Katie Harron from the UCL Institute of Child Health gave a talk on data linkage and what can go wrong when linking datasets.  

16th October 2012

The meeting was about the development of reporting guidelines for electronic health records (RECORD). More information is available from the RECORD website:

19th September 2012

We started the new academic year with a very special user group meeting featuring Tarek Hammad, deputy director for the Division of epidemiology at the US Food and Drug Agency (FDA). He talked about the role of epidemiology in drug safety from a regulatory perspective.

9th July 2012

Jordana Peake, from the UCL Institute for Women's Health presented on the use of patient identifiable information for data linkage for research into neural tube defects in ethnic communities. And Jenny Woodman, from the UCL Institute of Child Health, told us about the role of the GP for children with (possible) abuse and neglect: a mixed methods study.

14th June 2012

This usergroup meeting focussed on time series analyses. Lisa Szatkowski and Tessa Langley from the UK Centre for Tobacco Control Studies and University of Nottingham presented their work on evaluation of tobacco control policies: Evaluating tobacco control policies using time series analysis: examples and reflections. Some of their work is detailed in a recent paper using structural vector autoregression analysis.

28th March 2012

We had three speakers, who all have substantial experience with analysing HES data. Pia Hardelid (ICH, UCL), Nick Freemantle (PCPH, UCL) and Ruth Gilbert (ICH, UCL). Pia provided us with an overview of HES data and how it is organised, Nick told us about a study he was involved in that used HES data to assess whether weekend hospitalisation is associated with an increased risk of death, and finally, Ruth shared her expertise on validating codes in HES. 

7th November 2011

Ruth Brauer from the London School of Hygiene and Tropical Medicine (LSHTM) told us all about her work on antipsychotic agents and myocardial infarction. She compared the results from a case control study to a self-controlled case series design.

28th September 2011

Cathy Welch told us about a two stage method to identify outliers in electronic databases. The slides from this presentation can be found here, and the paper discussed is in press, but will be added to our publications list once it is available.

18th July 2011

Gareth James, a member of our very own THIN team, gave a talk about prevalence and patterns of long term prophylactic antibiotic use in COPD, and how to use multiple imputation to account for missing data in antibiotic prescribing. 

28th March 2011

Beatrix De La Iglesia from the University of East Anglia talked about the work for their recent publication in Heart: "Performance of the ASSIGN cardiovascular disease risk score on a UK cohort of patients from general practice".

Page last modified on 09 apr 15 15:53 by Rebecca K Lodwick