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https://www.readbyqxmd.com/read/28476151/health-care-resource-use-by-patients-before-and-after-a-diagnosis-of-chronic-fatigue-syndrome-cfs-me-a-clinical-practice-research-datalink-study
#1
Simon M Collin, Inger J Bakken, Irwin Nazareth, Esther Crawley, Peter D White
BACKGROUND: Our aim was to investigate patterns of health care resource use by patients before and after a diagnosis of CFS/ME, as recorded by Clinical Practice Research Datalink (CPRD) GP practices in the UK. METHODS: We used a case-control study design in which patients who had a first recorded diagnosis of CFS/ME during the period 01/01/2001 to 31/12/2013 were matched 1:1 with controls by age, sex, and GP practice. We compared rates of GP consultations, diagnostic tests, prescriptions, referrals, and symptoms between the two groups from 15 years (in adults) or 10 years (in children) before diagnosis to 10 years after diagnosis...
May 5, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28469154/risk-of-infections-in-patients-with-gout-a-population-based-cohort-study
#2
B Spaetgens, F de Vries, J H M Driessen, H G Leufkens, P C Souverein, A Boonen, J W M van der Meer, L A B Joosten
To investigate the risk of various types of infections (pneumonia and urinary tract infection (UTI)), and infection-related mortality in patients with gout compared with population-based controls. A retrospective cohort study was conducted using data from the UK Clinical Practice Research Datalink (CPRD). All patients with a first diagnosis of gout and aged >40 years between January 1987-July 2014, were included and matched with up to two controls. Time-varying Cox proportional hazards models were used to estimate the risk of infections and mortality...
May 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28463961/herpes-zoster-risk-after-21-specific-cancers-population-based-case-control-study
#3
Erik Hansson, Harriet J Forbes, Sinéad M Langan, Liam Smeeth, Krishnan Bhaskaran
BACKGROUND: Some malignancies are known to be associated with increased risk of herpes zoster, but little is known about how associations between cancer and subsequent zoster risk vary by cancer site, by time since cancer diagnosis, and by age. METHODS: An age-, sex-, calendar time-, and practice-matched case-control study, nested in the broadly UK representative Clinical Practice Research Datalink (CPRD) primary care database, was analysed using conditional logistic regression to estimate the association between 21 of the most common specific malignancies and subsequent zoster risk...
May 2, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28455344/temporal-trends-in-incidence-prevalence-and-mortality-of-atrial-fibrillation-in-primary-care
#4
Deirdre A Lane, Flemming Skjøth, Gregory Y H Lip, Torben B Larsen, Dipak Kotecha
BACKGROUND: Incidence and prevalence of atrial fibrillation (AF) are expected to increase dramatically; however, we currently lack comprehensive data on temporal trends in unselected clinical populations. METHODS AND RESULTS: Analysis of the UK Clinical Practice Research Datalink (CPRD) from 1998 to 2010 of patients with incident AF, excluding major valvular disease, linked to hospital admission data and national statistics. Fifty-seven thousand eight hundred eighteen adults were identified with mean age 74...
April 28, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28451867/prevalence-and-incidence-trends-for-diagnosed-prescription-opioid-use-disorders-in-the-united-kingdom
#5
Andrew J M Cooper, Jenna Willis, Janice Fuller, Heike Benecke, James Leighton-Scott, Frank Andersohn, Joseph Kim, Christoph Maier, Roger D Knaggs
INTRODUCTION: The prevalence of prescription opioid use disorders in the US has increased markedly in parallel with increases in opioid prescribing. Whilst an increase in opioid prescribing has also occurred in the UK, it remains unknown if there have been concurrent increases in opioid use disorders. The aim of this study was to examine national trends in the prevalence and incidence of physician-diagnosed opioid use disorders in the UK. METHODS: In a retrospective electronic health care database analysis using data from the UK Clinical Practice Research Datalink (CPRD), we identified persons receiving a first opioid prescription between January 1, 2008 and December 31, 2012...
April 27, 2017: Pain and Therapy
https://www.readbyqxmd.com/read/28387052/examining-trends-in-type-2-diabetes-incidence-prevalence-and-mortality-in-the-uk-between-2004-and-2014
#6
Salwa S Zghebi, Douglas T Steinke, Matthew J Carr, Martin K Rutter, Richard A Emsley, Darren M Ashcroft
AIMS: Contemporary data describing type 2 diabetes prevalence, incidence and mortality are limited. We aimed to (i) estimate annual incidence and prevalence rates of type 2 diabetes in the UK between 2004 and 2014; (ii) examine relationships between observed rates with age, gender, socio-economic status and geographic region; and (iii) assess how temporal changes in incidence and all-cause mortality rates influence changes in prevalence. METHODS: Type 2 diabetes cases aged ≥16 years between January 2004 and December 2014 were identified using the Clinical Practice Research Datalink (CPRD)...
April 7, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28362848/epidemiology-of-alcohol-dependence-in-uk-primary-care-results-from-a-large-observational-study-using-the-clinical-practice-research-datalink
#7
Andrew Thompson, Alison K Wright, Darren M Ashcroft, Tjeerd P van Staa, Munir Pirmohamed
This study aims to investigate the incidence and annual presentation rates of alcohol dependence in general practice in the UK, and examine age-, gender-, socioeconomic-, and region-specific variation. We conducted a retrospective 'open' cohort study using the Clinical Practice Research Datalink (CPRD), an anonymised primary care database. Prior to data extraction, a case definition for alcohol dependence in CPRD was established using 47 Read codes, which included primary alcohol dependence and consequences of alcohol dependence...
2017: PloS One
https://www.readbyqxmd.com/read/28360235/venous-thromboembolism-in-adults-screened-for-sickle-cell-trait-a-population-based-cohort-study-with-nested-case-control-analysis
#8
Iain Little, Yana Vinogradova, Elizabeth Orton, Joe Kai, Nadeem Qureshi
OBJECTIVE: To determine whether sickle cell carriers ('sickle cell trait') have an increased risk of venous thromboembolism (VTE). DESIGN: Cohort study with nested case-control analysis. SETTING: General population with data from 609 UK general practices in the Clinical Practice Research Datalink (CPRD). PARTICIPANTS: All individuals registered with a CPRD general practice between 1998 and 2013, with a medical record of screening for sickle cell between 18 and 75 years of age...
March 29, 2017: BMJ Open
https://www.readbyqxmd.com/read/28358988/trends-in-the-incidence-of-chronic-fatigue-syndrome-and-fibromyalgia-in-the-uk-2001-2013-a-clinical-practice-research-datalink-study
#9
Simon M Collin, Inger J Bakken, Irwin Nazareth, Esther Crawley, Peter D White
Objective Trends in recorded diagnoses of chronic fatigue syndrome (CFS, also known as 'myalgic encephalomyelitis' (ME)) and fibromyalgia (FM) in the UK were last reported more than ten years ago, for the period 1990-2001. Our aim was to analyse trends in incident diagnoses of CFS/ME and FM for the period 2001-2013, and to investigate whether incidence might vary by index of multiple deprivation (IMD) score. Design Electronic health records cohort study. Setting NHS primary care practices in the UK. Participants Participants: Patients registered with general practices linked to the Clinical Practice Research Datalink (CPRD) primary care database from January 2001 to December 2013...
January 1, 2017: Journal of the Royal Society of Medicine
https://www.readbyqxmd.com/read/28279992/association-of-comorbidity-and-health-service-usage-among-patients-with-dementia-in-the-uk-a-population-based-study
#10
Jorge Browne, Duncan A Edwards, Kirsty M Rhodes, D James Brimicombe, Rupert A Payne
BACKGROUND: The majority of people with dementia have other long-term diseases, the presence of which may affect the progression and management of dementia. This study aimed to identify subgroups with higher healthcare needs, by analysing how primary care consultations, number of prescriptions and hospital admissions by people with dementia varies with having additional long-term diseases (comorbidity). METHODS: A retrospective cohort study based on health data from the Clinical Practice Research Datalink (CPRD) was conducted...
March 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28246144/population-trends-in-the-10-year-incidence-and-prevalence-of-diabetic-retinopathy-in-the-uk-a-cohort-study-in-the-clinical-practice-research-datalink-2004-2014
#11
Rohini Mathur, Krishnan Bhaskaran, Emma Edwards, Helen Lee, Nishi Chaturvedi, Liam Smeeth, Ian Douglas
OBJECTIVES: To describe trends in the incidence and prevalence of diabetic retinopathy (DR) in the UK by diabetes type, age, sex, ethnicity, deprivation, region and calendar year. DESIGN: Cohort study using the Clinical Practice Research Datalink (CPRD). SETTING: UK primary care. PARTICIPANTS: 7.7 million patients ≥12 contributing to the CPRD from 2004 to 2014. PRIMARY AND SECONDARY OUTCOME MEASURES: Age-standardised prevalence and incidence of diabetes, DR and severe DR (requiring photocoagulation) by calendar year and population subgroup...
February 28, 2017: BMJ Open
https://www.readbyqxmd.com/read/28243454/presentation-of-sle-in-uk-primary-care-using-the-clinical-practice-research-datalink
#12
Alison L Nightingale, Julie E Davidson, Charles T Molta, Hong J Kan, Neil J McHugh
OBJECTIVES: To describe the presenting symptoms of SLE in primary care using the Clinical Practice Research Database (CPRD) and to calculate the time from symptom presentation to SLE diagnosis. METHODS: Incident cases of SLE were identified from the CPRD between 2000 and 2012. Presenting symptoms were identified from the medical records of cases in the 5 years before diagnosis and grouped using the British Isles Lupus Activity Group (BILAG) symptom domains. The time from the accumulation of one, two and three BILAG domains to SLE diagnosis was investigated, stratified by age at diagnosis (<30, 30-49 and ≥50 years)...
2017: Lupus Science & Medicine
https://www.readbyqxmd.com/read/28231289/rehr-an-r-package-for-manipulating-and-analysing-electronic-health-record-data
#13
David A Springate, Rosa Parisi, Ivan Olier, David Reeves, Evangelos Kontopantelis
Research with structured Electronic Health Records (EHRs) is expanding as data becomes more accessible; analytic methods advance; and the scientific validity of such studies is increasingly accepted. However, data science methodology to enable the rapid searching/extraction, cleaning and analysis of these large, often complex, datasets is less well developed. In addition, commonly used software is inadequate, resulting in bottlenecks in research workflows and in obstacles to increased transparency and reproducibility of the research...
2017: PloS One
https://www.readbyqxmd.com/read/28218819/healthcare-resource-utilization-and-related-financial-costs-associated-with-glucose-lowering-with-either-exenatide-or-basal-insulin-a-retrospective-cohort-study
#14
Sarah E Holden, Christopher Ll Morgan, Qing Qiao, Sara Jenkins-Jones, Ellen R Berni, Craig J Currie
AIMS: Type 2 diabetes is a major health problem placing increasing demands on healthcare systems. Our objective was to estimate healthcare resource use and related financial costs following treatment with exenatide-based regimens prescribed as once-weekly (EQW) or twice-daily (EBID) formulations, compared with regimens based on basal insulin (BI). MATERIALS AND METHODS: This retrospective cohort study used data from the UK Clinical Practice Research Datalink (CPRD) linked to Hospital Episode Statistics (HES)...
February 20, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28188601/sensitivity-of-the-uk-clinical-practice-research-datalink-to-detect-neurodevelopmental-effects-of-medicine-exposure-in-utero-comparative-analysis-of-an-antiepileptic-drug-exposed-cohort
#15
R A Charlton, A McGrogan, J Snowball, L M Yates, A Wood, J Clayton-Smith, W H Smithson, J L Richardson, N McHugh, S H L Thomas, G A Baker, R Bromley
INTRODUCTION: Electronic healthcare data have several advantages over prospective observational studies, but the sensitivity of data on neurodevelopmental outcomes and its comparability with data generated through other methodologies is unknown. OBJECTIVES: The objectives of this study were to determine whether data from the UK Clinical Practice Research Datalink (CPRD) produces similar risk estimates to a prospective cohort study in relation to the risk of neurodevelopmental disorders (NDDs) following prenatal antiepileptic drug (AED) exposure...
May 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28173634/prevalence-glucose-control-and-relative-survival-of-people-with-type-2-diabetes-in-the-uk-from-1991-to-2013
#16
S E Holden, S Jenkins-Jones, C Ll Morgan, J R Peters, G Schernthaner, C J Currie
AIMS: To characterize the prevalence of Type 2 diabetes between 1991 and 2013 in the UK and to determine whether corresponding glucose control and survival had changed in the diabetic population during this period. METHODS: For this retrospective cohort study, people diagnosed with Type 2 diabetes between 1991 and 2013 were identified from the Clinical Practice Research Datalink (CPRD) and the annual point prevalence calculated. Mean HbA1c by year was estimated...
February 7, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28156036/assessing-recording-delays-in-general-practice-records-to-inform-near-real-time-vaccine-safety-surveillance-using-the-clinical-practice-research-datalink-cprd
#17
Andreia Leite, Nick J Andrews, Sara L Thomas
PURPOSE: Near real-time vaccine safety surveillance (NRTVSS) is an option for post-licensure vaccine safety assessment. NRTVSS requires timely recording of outcomes in the database used. Our main objective was to examine recording delays in the Clinical Practice Research Datalink (CPRD) for outcomes of interest for vaccine safety to inform the feasibility of NRTVSS using these data. We also evaluated completeness of recording and further assessed reporting delays for hospitalized events in CPRD...
April 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28122831/quality-of-recording-of-diabetes-in-the-uk-how-does-the-gp-s-method-of-coding-clinical-data-affect-incidence-estimates-cross-sectional-study-using-the-cprd-database
#18
A Rosemary Tate, Sheena Dungey, Simon Glew, Natalia Beloff, Rachael Williams, Tim Williams
OBJECTIVE: To assess the effect of coding quality on estimates of the incidence of diabetes in the UK between 1995 and 2014. DESIGN: A cross-sectional analysis examining diabetes coding from 1995 to 2014 and how the choice of codes (diagnosis codes vs codes which suggest diagnosis) and quality of coding affect estimated incidence. SETTING: Routine primary care data from 684 practices contributing to the UK Clinical Practice Research Datalink (data contributed from Vision (INPS) practices)...
January 25, 2017: BMJ Open
https://www.readbyqxmd.com/read/28110382/economic-evaluations-alongside-efficient-study-designs-using-large-observational-datasets-the-pleasant-trial-case-study
#19
Matthew Franklin, Sarah Davis, Michelle Horspool, Wei Sun Kua, Steven Julious
BACKGROUND: Large observational datasets such as Clinical Practice Research Datalink (CPRD) provide opportunities to conduct clinical studies and economic evaluations with efficient designs. OBJECTIVES: Our objectives were to report the economic evaluation methodology for a cluster randomised controlled trial (RCT) of a UK NHS-delivered public health intervention for children with asthma that was evaluated using CPRD and describe the impact of this methodology on results...
May 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28097904/estimated-burden-of-cardiovascular-disease-and-value-based-price-range-for-evolocumab-in-a-high-risk-secondary-prevention-population-in-the-us-payer-context
#20
Peter P Toth, Mark Danese, Guillermo Villa, Yi Qian, Anne Beaubrun, Armando Lira, Jeroen P Jansen
AIM: To estimate real-world cardiovascular disease (CVD) burden and value-based price range of evolocumab for a US-context, high-risk, secondary-prevention population. MATERIALS AND METHODS: Burden of CVD was assessed using the UK-based Clinical Practice Research Datalink (CPRD) in order to capture complete CV burden including CV mortality. Patients on standard of care (SOC; high-intensity statins) in CPRD were selected based on eligibility criteria of FOURIER, a phase 3 CV outcomes trial of evolocumab, and categorized into four cohorts: high-risk prevalent atherosclerotic CVD (ASCVD) cohort (n = 1448), acute coronary syndrome (ACS) (n = 602), ischemic stroke (IS) (n = 151), and heart failure (HF) (n = 291) incident cohorts...
January 25, 2017: Journal of Medical Economics
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