Approved studies using CPRD Data

Access to CPRD data, including UK Primary Care Data, and linked data such as Hospital Episode Statistics, is subject to protocol approval via CPRD’s Research Data Governance (RDG) Process. Independent scientific and patient advice is provided by Expert Review Committees (ERCs) and the Central Advisory Committee (CAC). 

A summary of all approved protocols, including a lay and technical summary of the proposed research, is published three months after researchers have access to the data to begin their study. COVID-19 research protocols are being fast-tracked and all approved summaries are published within 72 hours to ensure transparency and to help avoid unnecessary duplication. 

Protocols below are listed in order of date of approval. Please click on the study title for more details. 

Peer-reviewed publications from research using CPRD data will be listed on our bibliography page


Date of Approval Title
26/07/2019 Suspected cancer symptoms and blood test results in primary care before a diagnosis of lung cancer: a case-control study
26/07/2019 5-Alpha Reductase Inhibitors and the Risk of Anaemia
26/07/2019 The balance between face-to-face and phone consultations in primary care and its effect on hospital demand: A longitudinal observational study
24/07/2019 Uncontrolled blood pressure and therapeutic inertia in treated hypertensive patients: a retrospective descriptive cohort study using CPRD
24/07/2019 Comparative effectiveness of gliclazide MR and sitagliptin as second line treatment after metformin monotherapy in uncontrolled type 2 diabetes patients using the UK Clinical Practice Research Datalink (CPRD) database
23/07/2019 Real world data on utilisation and safety of Movicol paediatric plain among children <2 years
18/07/2019 Prevalence of established cardiovascular disease in patients with type 2 diabetes mellitus in the UK
11/07/2019 Investigating capacity for NICE guidance on recognition and referral for suspected cancer
10/07/2019 Association of serum bilirubin level with renal outcomes in patients with type 2 diabetes and patients with essential hypertension
10/07/2019 A retrospective observational cohort study to identify the real-world use of oral glycopyrronium bromide in children
04/07/2019 Variation in healthcare utilisation across primary and secondary care for patients with type 1 and type 2 diabetes
04/07/2019 Changes in Healthcare Resource Use (HRU) and Related Costs in Chronic Obstructive Pulmonary Disease (COPD) Patients over 9 years: A France/UK comparative study
28/06/2019 Trends in Acid Suppressant Drug Prescriptions in Primary Care in the United Kingdom
25/06/2019 The effect of common infections on the risk of dementia in individuals with and without diabetes: a cohort study using UK primary and secondary care data
25/06/2019 Repurposing Drugs for the Prevention and Treatment of Dementia
19/06/2019 Treatment cut-offs for blood pressure lowering and lipid lowering treatment: a cohort study in UK primary care
18/06/2019 What happens between first symptoms and first acute exacerbation of COPD? Mapping and prediction study
18/06/2019 Stroke incidence among people with heart failure and atrial fibrillation
12/06/2019 Potentially unintended discontinuation of medication following hospitalisation: a retrospective cohort study
12/06/2019 Treatment patterns among new users of maintenance asthma medications in the United Kingdom