Concordance and timing in recording cancer events in primary care, hospital and mortality records for patients with and without psoriasis: A population-based cohort study

Background The association between psoriasis and the risk of cancer has been investigated in numerous studies utilising electronic health records (EHRs), with conflicting results in the extent of the association. Objectives To assess concordance and timing of cancer recording between primary care, hospital and death registration data for people with and without psoriasis. Methods Cohort studies delineated using primary care EHRs from the Clinical Practice Research Datalink (CPRD) GOLD and Aurum databases, with linkage to hospital episode statistics (HES), Office for National Statistics (ONS) mortality data and indices of multiple deprivation (IMD). People with psoriasis were matched to those without psoriasis by age, sex and general practice. Cancer recording between databases was investigated by proportion concordant, that being the presence of cancer record in both source and comparator datasets. Delay in recording cancer diagnoses between CPRD and HES records and predictors of discordance were also assessed. Results 58,904 people with psoriasis and 350,592 comparison patients were included using CPRD GOLD; whereas 213,400 people with psoriasis and 1,268,998 comparison patients were included in CPRD Aurum. For all cancer records (excluding keratinocyte), concordance between CPRD and HES was greater than 80%. Concordance for same-site cancer records was markedly lower (<68% GOLD-linked data; <72% Aurum-linked data). Concordance of non-Hodgkin lymphoma and liver cancer recording between CPRD and HES was lower for people with psoriasis compared to those without. Conclusions Concordance between CPRD and HES is poor when restricted to cancers of the same site, with greater discordance in people with psoriasis for some cancers of specific sites. The use of linked patient-level data is an important step in reducing misclassification of cancer outcomes in epidemiological studies using routinely collected electronic health records.

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An electronic health records cohort study on heart failure following myocardial infarction in England: incidence and predictors

BMJ Open ◽

10.1136/bmjopen-2017-018331 ◽

2018 ◽

Vol 8 (3) ◽

pp. e018331 ◽

Cited By ~ 13

Author(s):

Johannes M I H Gho ◽

Amand F Schmidt ◽

Laura Pasea ◽

Stefan Koudstaal ◽

Mar Pujades-Rodriguez ◽

...

Keyword(s):

Myocardial Infarction ◽

Heart Failure ◽

Electronic Health Records ◽

Hospital Admissions ◽

Sensitivity Analyses ◽

Mortality Data ◽

Care Hospital ◽

Health Records ◽

Primary Care Hospital ◽

Electronic Health

ObjectivesTo investigate the incidence and determinants of heart failure (HF) following a myocardial infarction (MI) in a contemporary cohort of patients with MI using routinely collected primary and hospital care electronic health records (EHRs).MethodsData were used from the CALIBER programme, linking EHRs in England from primary care, hospital admissions, an MI registry and mortality data. Subjects were eligible if they were 18 years or older, did not have a history of HF and survived a first MI. Factors associated with time to HF were examined using Cox proportional hazard models.ResultsOf the 24 479 patients with MI, 5775 (23.6%) developed HF during a median follow-up of 3.7 years (incidence rate per 1000 person-years: 63.8, 95% CI 62.2 to 65.5). Baseline characteristics significantly associated with developing HF were: atrial fibrillation (HR 1.62, 95% CI 1.51 to 1.75), age (per 10 years increase: 1.45, 1.41 to 1.49), diabetes (1.45, 1.35 to 1.56), peripheral arterial disease (1.38, 1.26 to 1.51), chronic obstructive pulmonary disease (1.28, 1.17 to 1.40), greater socioeconomic deprivation (5th vs 1st quintile: 1.27, 1.13 to 1.41), ST-segment elevation MI at presentation (1.19, 1.11 to 1.27) and hypertension (1.16, 1.09 to 1.23). Results were robust to various sensitivity analyses such as competing risk analysis and multiple imputation.ConclusionIn England, one in four survivors of a first MI develop HF within 4 years. This contemporary study demonstrates that patients with MI are at considerable risk of HF. Baseline patient characteristics associated with time until HF were identified, which may be used to target preventive strategies.

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Preliminary results from the COPE study using primary-care electronic health records and environmental modelling to examine COPD exacerbations

British Journal of General Practice ◽

10.3399/bjgp18x696749 ◽

2018 ◽

Vol 68 (suppl 1) ◽

pp. bjgp18X696749 ◽

Cited By ~ 2

Author(s):

Maimoona Hashmi ◽

Mark Wright ◽

Kirin Sultana ◽

Benjamin Barratt ◽

Lia Chatzidiakou ◽

...

Keyword(s):

Primary Care ◽

Electronic Health Records ◽

Health Management ◽

Practice Research ◽

Chronic Obstructive ◽

Clinical Practice Research Datalink ◽

Health Records ◽

Preliminary Results ◽

Copd Exacerbations ◽

Electronic Health

BackgroundChronic Obstructive Airway Disease (COPD) is marked by often severely debilitating exacerbations. Efficient patient-centric research approaches are needed to better inform health management primary-care.AimThe ‘COPE study’ aims to develop a method of predicting COPD exacerbations utilising personal air quality sensors, environmental exposure modelling and electronic health records through the recruitment of patients from consenting GPs contributing to the Clinical Practice Research Datalink (CPRD).MethodThe study made use of Electronic Healthcare Records (EHR) from CPRD, an anonymised GP records database to screen and locate patients within GP practices in Central London. Personal air monitors were used to capture data on individual activities and environmental exposures. Output from the monitors were then linked with the EHR data to obtain information on COPD management, severity, comorbidities and exacerbations. Symptom changes not equating to full exacerbations were captured on diary cards. Linear regression was used to investigate the relationship between subject peak flow, symptoms, exacerbation events and exposure data.ResultsPreliminary results on the first 80 patients who have completed the study indicate variable susceptibility to environmental stressors in COPD patients. Some individuals appear highly susceptible to environmental stress and others appear to have unrelated triggers.ConclusionRecruiting patients through EHR for a study is feasible and allows easy collection of data for long term follow up. Portable environmental sensors could now be used to develop personalised models to predict risk of COPD exacerbations in susceptible individuals. Identification of direct links between participant health and activities would allow improved health management thus cost savings.

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Childhood obesity trends from primary care electronic health records in England between 1994 and 2013: population-based cohort study

Archives of Disease in Childhood ◽

10.1136/archdischild-2014-307151 ◽

2015 ◽

Vol 100 (3) ◽

pp. 214-219 ◽

Cited By ~ 73

Author(s):

Cornelia H M van Jaarsveld ◽

Martin C Gulliford

Keyword(s):

Primary Care ◽

Cohort Study ◽

Electronic Health Records ◽

Age Groups ◽

Overweight And Obesity ◽

Practice Research ◽

Clinical Practice Research Datalink ◽

Health Records ◽

Obesity Trends ◽

Electronic Health

ObjectiveThis study aimed to use primary care electronic health records to evaluate the prevalence of overweight and obesity in 2–15-year-old children in England and compare trends over the last two decades.DesignCohort study of primary care electronic health records.Setting375 general practices in England that contribute to the UK Clinical Practice Research Datalink.PatientsIndividual participants were sampled if they were aged between 2 and 15 years during the period 1994–2013 and had one or more records of body mass index (BMI).Main outcome measurePrevalence of overweight (including obesity) was defined as a BMI equal to or greater than the 85th centile of the 1990 UK reference population.ResultsData were analysed for 370 544 children with 507 483 BMI records. From 1994 to 2003, the odds of overweight and obesity increased by 8.1% per year (95% CI 7.2% to 8.9%) compared with 0.4% (−0.2% to 1.1%) from 2004 to 2013. Trends were similar for boys and girls, but differed by age groups, with prevalence stabilising in 2004 to 2013 in the younger (2–10 year) but not older (11–15 year) age group, where rates continued to increase.ConclusionsPrimary care electronic health records in England may provide a valuable resource for monitoring obesity trends. More than a third of UK children are overweight or obese, but the prevalence of overweight and obesity may have stabilised between 2004 and 2013.

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Using electronic health records to inform trial feasibility in a rare autoimmune blistering skin disease in England

BMC Medical Research Methodology ◽

10.1186/s12874-021-01212-1 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

M. S. M. Persson ◽

K. E. Harman ◽

K. S. Thomas ◽

J. R. Chalmers ◽

Y. Vinogradova ◽

...

Keyword(s):

Electronic Health Records ◽

Bullous Pemphigoid ◽

Rare Diseases ◽

Skin Disease ◽

Practice Research ◽

Clinical Practice Research Datalink ◽

Care Hospital ◽

Health Records ◽

People With Dementia ◽

Electronic Health

Abstract Background Trials of novel agents are required to improve the care of patients with rare diseases, but trial feasibility may be uncertain due to concerns over insufficient patient numbers. We aimed to determine the size of the pool of potential participants in England 2015–2017 for trials in the autoimmune blistering skin disease bullous pemphigoid. Methods The size of the pool of potential participants was estimated using routinely collected healthcare data from linked primary care (Clinical Practice Research Datalink; CPRD) and secondary care (Hospital Episode Statistics; HES) databases. Thirteen consultant dermatologists were surveyed to determine the likelihood that a patient would be eligible for a trial based on the presence of cautions or contra-indications to prednisolone use. These criteria were applied to determine how they influenced the potential pool of participants. Results Extrapolated to the population of England, we would expect approximately 10,800 (point estimate 10,747; 95% CI 7191 to 17,239) new cases of bullous pemphigoid to be identified in a three-year period. For a future trial involving oral prednisolone (standard care), the application of cautions to its use as exclusion criteria would result in approximately 365 potential participants unlikely to be recruited, a further 5332 could be recruited with caution, and 5104 in whom recruitment is still possible. 11–17% of potential participants may have pre-existing dementia and require an alternative consent process. Conclusions Routinely collected electronic health records can be used to inform the feasibility of clinical trials in rare diseases, such as whether recruitment is feasible nationally and how long recruitment might take to meet recruitment targets. Future trials of bullous pemphigoid in England may use the data presented to inform trial design, including eligibility criteria and consent processes for enrolling people with dementia.

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Long-term impact of giving antibiotics before skin incision versus after cord clamping on children born by caesarean section: protocol for a longitudinal study based on UK electronic health records

BMJ Open ◽

10.1136/bmjopen-2019-033013 ◽

2019 ◽

Vol 9 (9) ◽

pp. e033013 ◽

Cited By ~ 1

Author(s):

Dana Šumilo ◽

Krishnarajah Nirantharakumar ◽

Brian H Willis ◽

Gavin Rudge ◽

James Martin ◽

...

Keyword(s):

Caesarean Section ◽

Electronic Health Records ◽

Skin Incision ◽

Practice Research ◽

Health Improvement ◽

Clinical Practice Research Datalink ◽

Care Hospital ◽

Health Records ◽

Cord Clamping ◽

Electronic Health

IntroductionIn the UK, about a quarter of women give birth by caesarean section (CS) and are offered prophylactic broad-spectrum antibiotics to reduce the risk of maternal postpartum infection. In 2011, national guidance was changed from recommending antibiotics after the umbilical cord was cut to giving antibiotics prior to skin incision based on evidence that earlier administration reduces maternal infectious morbidity. Although antibiotics cross the placenta, there are no known short-term harms to the baby. This study aims to address the research gap on longer term impact of these antibiotics on child health.Methods and analysisA controlled interrupted time series study will use anonymised mother-baby linked routine electronic health records for children born during 2006–2018 recorded in UK primary care (The Health Improvement Network, THIN and Clinical Practice Research Datalink, CPRD) and secondary care (Hospital Episode Statistics, HES) databases. The primary outcomes of interest are asthma and eczema, two common allergy-related diseases in childhood. In-utero exposure to antibiotics immediately prior to CS will be compared with no exposure when given after cord clamping. The risk of outcomes in children delivered by CS will also be compared with a control cohort delivered vaginally to account for time effects. We will use all available data from THIN, CPRD and HES with estimated power of 80% and 90% to detect relative increase in risk of asthma of 16% and 18%, respectively at the 5% significance level.Ethics and disseminationEthical approval has been obtained from the University of Birmingham Ethical Review Committee with scientific approvals obtained from the independent scientific advisory committees from the Medicines and Healthcare products Regulatory Agency for CPRD and the data provider, IQVIA for THIN. The results will be published in peer-reviewed journals, presented at national and international conferences and disseminated to stakeholders.

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OP46 Comparison of sepsis recording in primary care electronic health records and linked hospital episodes and mortality data: population-based cohort study in England

10.1136/jech-2020-ssmabstracts.46 ◽

2020 ◽

Author(s):

E Rezel-Potts ◽

M Gulliford

Keyword(s):

Primary Care ◽

Cohort Study ◽

Electronic Health Records ◽

Population Based ◽

Mortality Data ◽

Health Records ◽

Electronic Health

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Estimating the population health burden of musculoskeletal conditions using primary care electronic health records

Rheumatology ◽

10.1093/rheumatology/keab109 ◽

2021 ◽

Author(s):

Dahai Yu ◽

George Peat ◽

Kelvin P Jordan ◽

James Bailey ◽

Daniel Prieto-Alhambra ◽

...

Keyword(s):

Primary Care ◽

Chronic Pain ◽

Low Back Pain ◽

Back Pain ◽

Electronic Health Records ◽

High Impact ◽

Low Back ◽

Musculoskeletal Health ◽

Health Records ◽

Electronic Health

Abstract Objectives Better indicators from affordable, sustainable data sources are needed to monitor population burden of musculoskeletal conditions. We propose five indicators of musculoskeletal health and assessed if routinely available primary care electronic health records (EHR) can estimate population levels in musculoskeletal consulters. Methods We collected validated patient-reported measures of pain experience, function and health status through a local survey of adults (≥35 years) presenting to English general practices over 12 months for low back pain, shoulder pain, osteoarthritis and other regional musculoskeletal disorders. Using EHR data we derived and validated models for estimating population levels of five self-reported indicators: prevalence of high impact chronic pain, overall musculoskeletal health (based on Musculoskeletal Health Questionnaire), quality of life (based on EuroQoL health utility measure), and prevalence of moderate-to-severe low back pain and moderate-to-severe shoulder pain. We applied models to a national EHR database (Clinical Practice Research Datalink) to obtain national estimates of each indicator for three successive years. Results The optimal models included recorded demographics, deprivation, consultation frequency, analgesic and antidepressant prescriptions, and multimorbidity. Applying models to national EHR, we estimated that 31.9% of adults (≥35 years) presenting with non-inflammatory musculoskeletal disorders in England in 2016/17 experienced high impact chronic pain. Estimated population health levels were worse in women, older aged and those in the most deprived neighbourhoods, and changed little over 3 years. Conclusion National and subnational estimates for a range of subjective indicators of non-inflammatory musculoskeletal health conditions can be obtained using information from routine electronic health records.

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