scholarly journals The incidence, prevalence, and survival of systemic sclerosis in the UK Clinical Practice Research Datalink

2018 ◽  
Vol 37 (8) ◽  
pp. 2103-2111 ◽  
Author(s):  
Jeremy G. Royle ◽  
Peter C. Lanyon ◽  
Matthew J. Grainge ◽  
Abhishek Abhishek ◽  
Fiona A. Pearce
Keyword(s):  
Clinical Practice ◽  
Systemic Sclerosis ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
The Uk ◽  
Incidence Prevalence

scholarly journals Correction to: The incidence, prevalence, and survival of systemic sclerosis in the UK Clinical Practice Research Datalink

2018 ◽  
Vol 37 (9) ◽  
pp. 2601-2601 ◽  
Author(s):  
Jeremy G. Royle ◽  
Peter C. Lanyon ◽  
Matthew J. Grainge ◽  
Abhishek Abhishek ◽  
Fiona A. Pearce
Keyword(s):  
Clinical Practice ◽  
Systemic Sclerosis ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
The Uk ◽  
Incidence Prevalence

scholarly journals Epidemiology of systemic sclerosis in the UK: an analysis of the Clinical Practice Research Datalink

Rheumatology ◽  
2020 ◽  
Author(s):  
John D Pauling ◽  
Anita McGrogan ◽  
Julia Snowball ◽  
Neil J McHugh
Keyword(s):  
Primary Care ◽  
Clinical Practice ◽  
Diagnostic Delay ◽  
Unmet Need ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Study Cohort ◽  
Case Ascertainment ◽  
The Uk ◽  
Incidence Prevalence

Abstract Objectives We developed and tested a robust case ascertainment strategy within the Clinical Practice Research Datalink (CPRD), with the aim of assessing the incidence, prevalence, mortality and delay in diagnosis of SSc in the UK. Methods A two-stage case ascertainment strategy was devised and tested to establish a valid cohort of SSc cases within the CPRD. Incidence, prevalence and mortality statistics were analysed, alongside evaluation of the relationship between primary care codes for RP and SSc to examine diagnostic delay. Results SSc Read codes were identified in 3123 patients (from a study cohort of >10.1 million individuals). Of these, 1757 cases of SSc were identified using our case ascertainment approach. The overall incidence rate of SSc over the period between 1999 and 2017 was 10.7/million/year (95% CI: 9.9–11.4), being higher in females [17.69/million/year (95% CI: 16.32–19.07)] than in males [3.59/million/year (95% CI: 2.97–4.21)]. The overall prevalence of SSc in adults was 235.5/million (95% CI: 207.2–245.7). The mean rate of mortality was 32/1000 person-years, with an overall standardized mortality ratio of 3.51 (95% CI: 3.19–3.84). Of those with an initial code of RP prior to a Read code of SSc, 191/854 (22.4%) had a lag period of >10 years. Conclusion We have developed and tested a robust case ascertainment strategy to examine the incidence, prevalence, mortality and diagnostic delay of SSc using primary care records of over 10 million UK residents. A significant lag between coding of RP and SSc in many patients suggests diagnostic delay in SSc remains an important unmet need.

scholarly journals Calcium channel blockers and cancer: a risk analysis using the UK Clinical Practice Research Datalink (CPRD)

BMJ Open ◽  
2016 ◽  
Vol 6 (1) ◽  
pp. e009147 ◽  
Author(s):  
Lamiae Grimaldi-Bensouda ◽  
Olaf Klungel ◽  
Xavier Kurz ◽  
Mark C H de Groot ◽  
Ana S Maciel Afonso ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Risk Analysis ◽  
Calcium Channel ◽  
Calcium Channel Blockers ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Channel Blockers ◽  
The Uk

scholarly journals Development and validation of prediction models to estimate risk of primary total hip and knee replacements using data from the UK: two prospective open cohorts using the UK Clinical Practice Research Datalink

2018 ◽  
Vol 78 (1) ◽  
pp. 91-99 ◽  
Author(s):  
Dahai Yu ◽  
Kelvin P Jordan ◽  
Kym I E Snell ◽  
Richard D Riley ◽  
John Bedson ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Large Scale ◽  
Prediction Models ◽  
Cox Proportional Hazards ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Total Hip ◽  
Risk Of Death ◽  
Geographical Regions ◽  
The Uk

ObjectivesThe ability to efficiently and accurately predict future risk of primary total hip and knee replacement (THR/TKR) in earlier stages of osteoarthritis (OA) has potentially important applications. We aimed to develop and validate two models to estimate an individual’s risk of primary THR and TKR in patients newly presenting to primary care.MethodsWe identified two cohorts of patients aged ≥40 years newly consulting hip pain/OA and knee pain/OA in the Clinical Practice Research Datalink. Candidate predictors were identified by systematic review, novel hypothesis-free ‘Record-Wide Association Study’ with replication, and panel consensus. Cox proportional hazards models accounting for competing risk of death were applied to derive risk algorithms for THR and TKR. Internal–external cross-validation (IECV) was then applied over geographical regions to validate two models.Results45 predictors for THR and 53 for TKR were identified, reviewed and selected by the panel. 301 052 and 416 030 patients newly consulting between 1992 and 2015 were identified in the hip and knee cohorts, respectively (median follow-up 6 years). The resultant model C-statistics is 0.73 (0.72, 0.73) and 0.79 (0.78, 0.79) for THR (with 20 predictors) and TKR model (with 24 predictors), respectively. The IECV C-statistics ranged between 0.70–0.74 (THR model) and 0.76–0.82 (TKR model); the IECV calibration slope ranged between 0.93–1.07 (THR model) and 0.92–1.12 (TKR model).ConclusionsTwo prediction models with good discrimination and calibration that estimate individuals’ risk of THR and TKR have been developed and validated in large-scale, nationally representative data, and are readily automated in electronic patient records.

scholarly journals Statin use and reduced risk of biliary tract cancers in the UK Clinical Practice Research Datalink

Gut ◽  
2018 ◽  
Vol 68 (8) ◽  
pp. 1458-1464 ◽  
Author(s):  
Zhiwei Liu ◽  
Rotana Alsaggaf ◽  
Katherine A McGlynn ◽  
Lesley A Anderson ◽  
Huei-Ting Tsai ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Biliary Tract ◽  
Conditional Logistic Regression ◽  
Incidence Density ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Biliary Tract Cancers ◽  
The Uk ◽  
Reduced Risk ◽  
Statin Use

ObjectiveTo evaluate the association between statin use and risk of biliary tract cancers (BTC).DesignThis is a nested case–control study conducted in the UK Clinical Practice Research Datalink. We included cases diagnosed with incident primary BTCs, including cancers of the gall bladder, bile duct (ie, both intrahepatic and extrahepatic cholangiocarcinoma), ampulla of Vater and mixed type, between 1990 and 2017. For each case, we selected five controls who did not develop BTCs at the time of case diagnosis, matched by sex, year of birth, calendar time and years of enrolment in the general practice using incidence density sampling. Exposures were defined as two or more prescription records of statins 1 year prior to BTC diagnosis or control selection. ORs and 95% CIs for associations between statins and BTC overall and by subtypes were estimated using conditional logistic regression, adjusted for relevant confounders.ResultsWe included 3118 BTC cases and 15 519 cancer-free controls. Current statin use versus non-use was associated with a reduced risk of all BTCs combined (adjusted OR=0.88, 95% CI 0.79 to 0.98). The reduced risks were most pronounced among long-term users, as indicated by increasing number of prescriptions (ptrend=0.016) and cumulative dose of statins (ptrend=0.008). The magnitude of association was similar for statin use and risk of individual types of BTCs. The reduced risk of BTCs associated with a record of current statin use versus non-use was more pronounced among persons with diabetes (adjusted OR=0.72, 95% CI 0.57 to 0.91). Among non-diabetics, the adjusted OR for current statin use versus non-use was 0.91 (95% CI 0.81 to 1.03, pheterogeneity=0.007).ConclusionCompared with non-use of statins, current statin use is associated with 12% lower risk of BTCs; no association found with former statin use. If replicated, particularly in countries with a high incidence of BTCs, our findings could pave the way for evaluating the value of statins for BTC chemoprevention.

scholarly journals Validation of hip osteoarthritis diagnosis recording in the UK Clinical Practice Research Datalink

2018 ◽  
Vol 28 (2) ◽  
pp. 187-193 ◽  
Author(s):  
Rory J. Ferguson ◽  
Daniel Prieto‐Alhambra ◽  
Christine Walker ◽  
Dahai Yu ◽  
Jose M. Valderas ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Hip Osteoarthritis ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
The Uk

scholarly journals Examining the risk of depression or self-harm associated with incretin-based therapies used to manage hyperglycaemia in patients with type 2 diabetes: a cohort study using the UK Clinical Practice Research Datalink

BMJ Open ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. e023830 ◽  
Author(s):  
John-Michael Gamble ◽  
Eugene Chibrikov ◽  
William K Midodzi ◽  
Laurie K Twells ◽  
Sumit R Majumdar
Keyword(s):  
Cohort Study ◽  
Clinical Practice ◽  
Population Based ◽  
Practice Research ◽  
Primary Study ◽  
Clinical Practice Research Datalink ◽  
Glucose Lowering ◽  
Self Harm ◽  
The Uk ◽  
New Onset

ObjectivesTo compare population-based incidence rates of new-onset depression or self-harm in patients initiating incretin-based therapies with that of sulfonylureas (SU) and other glucose-lowering agents.DesignPopulation-based cohort study.SettingPatients attending primary care practices registered with the UK-based Clinical Practice Research Datalink (CPRD).ParticipantsUsing the UK-based CPRD, we identified two incretin-based therapies cohorts: (1) dipeptidyl peptidase-4 inhibitor (DPP-4i)-cohort, consisting of new users of DPP-4i and SU and (2) glucagon-like peptide-1 receptor agonists (GLP-1RA)-cohort, consisting of new users of GLP-1RA and SU, between January 2007 and January 2016. Patients with a prior history of depression, self-harm and other serious psychiatric conditions were excluded.Main outcome measuresThe primary study outcome comprised a composite of new-onset depression or self-harm. Unadjusted and adjusted Cox proportional hazards regression was used to quantify the association between incretin-based therapies and depression or self-harm. Deciles of High-Dimensional Propensity Scores and concurrent number of glucose-lowering agents were used to adjust for potential confounding.ResultsWe identified new users of 6206 DPP-4i and 22 128 SU in the DPP-4i-cohort, and 501 GLP-1RA and 16 409 SU new users in the GLP-1RA-cohort. The incidence of depression or self-harm was 8.2 vs 11.7 events/1000 person-years in the DPP-4i-cohort and 18.2 vs 13.6 events/1000 person-years in the GLP-1RA-cohort for incretin-based therapies versus SU, respectively. Incretin-based therapies were not associated with an increased or decreased incidence of depression or self-harm compared with SU (DPP-4i-cohort: unadjusted HR 0.70, 95% CI 0.51 to 0.96; adjusted HR 0.80, 95% CI 0.57 to 1.13; GLP-1RA-cohort: unadjusted HR 1.36, 95% CI 0.72 to 2.58; adjusted HR 1.25, 95% CI 0.63 to 2.50). Consistent results were observed for other glucose-lowering comparators including insulin and thiazolidinediones.ConclusionsOur findings suggest that the two incretin-based therapies are not associated with an increased or decreased risk of depression or self-harm.

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