Tjeerd van Staa

ORCID: 0000-0001-9363-742X
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Bone health and osteoporosis research
  • Health Systems, Economic Evaluations, Quality of Life
  • Hip and Femur Fractures
  • Bone health and treatments
  • Lipoproteins and Cardiovascular Health
  • Antibiotic Use and Resistance
  • Rheumatoid Arthritis Research and Therapies
  • Patient Satisfaction in Healthcare
  • Bone and Joint Diseases
  • Chronic Disease Management Strategies
  • Primary Care and Health Outcomes
  • Atrial Fibrillation Management and Outcomes
  • Pharmaceutical Practices and Patient Outcomes
  • Health Promotion and Cardiovascular Prevention
  • Advanced Causal Inference Techniques
  • Healthcare Systems and Technology
  • Statistical Methods in Clinical Trials
  • Inflammatory mediators and NSAID effects
  • Pharmacovigilance and Adverse Drug Reactions
  • Chronic Obstructive Pulmonary Disease (COPD) Research
  • Adrenal Hormones and Disorders
  • Clinical practice guidelines implementation
  • Bone Metabolism and Diseases
  • Pneumonia and Respiratory Infections
  • Orthopaedic implants and arthroplasty

University of Manchester
2016-2025

Health Data Research UK
2010-2025

Manchester Academic Health Science Centre
2016-2025

National Institute for Health Research
2025

Utrecht University
2014-2023

Farr Institute
2014-2023

Pharmo Institute
2012-2022

Environmental Research Institute
2022

Turing Institute
2019-2020

British Library
2019-2020

The Clinical Practice Research Datalink (CPRD) is an ongoing primary care database of anonymised medical records from general practitioners, with coverage over 11.3 million patients 674 practices in the UK.With 4.4 active (alive, currently registered) meeting quality criteria, approximately 6.9% UK population are included and broadly representative terms age, sex ethnicity.General practitioners gatekeepers specialist referrals UK.The CPRD therefore a rich source health data for research,...

10.1093/ije/dyv098 article EN cc-by International Journal of Epidemiology 2015-06-01

Abstract Treatment with systemic corticosteroids is known to increase the risk of fractures but little fracture risks associated inhaled corticosteroids. A retrospective cohort study was conducted using a large UK primary care database (the General Practice Research Database [GPRD]). Inhaled corticosteroid users aged 18 years or older were compared matched control patients and group noncorticosteroid bronchodilator users. Patients concomitant use excluded. The comprised 170,818 users,...

10.1359/jbmr.2001.16.3.581 article EN Journal of Bone and Mineral Research 2001-03-01

Objective. This study examined the effects of daily and cumulative oral corticosteroid doses on risk fractures.

10.1093/rheumatology/39.12.1383 article EN Lara D. Veeken 2000-12-01

A population-based British cohort study, including approximately 6% of the population, was used to derive age- and sex-specific incidence rates fractures during childhood. Fractures were more common among boys than girls, with peak incidences at 14 11 years age, respectively. At childhood peak, only surpassed later in life 85 age women never men.Fractures account for 25% accidents injuries childhood; however, descriptive epidemiology remains uncertain.Age- various skeletal sites derived from...

10.1359/jbmr.040902 article EN Journal of Bone and Mineral Research 2004-12-01

To determine whether patients with rheumatoid arthritis (RA) have an increased risk of fracture, and to estimate their long-term absolute fracture risk.We studied RA ages >or=40 years in the British General Practice Research Database, each matched by age, sex, calendar time, practice 3 control patients. Incident fractures, as recorded computerized medical records, were ascertained over a median followup 7.6 years. The rate compared controls was adjusted for smoking, body mass index (BMI),...

10.1002/art.22117 article EN Arthritis & Rheumatism 2006-09-28

Abstract Objective To evaluate predictors of vertebral fractures, including a threshold for bone mineral density (BMD), in patients receiving oral glucocorticoids (GCs). Methods Data were obtained from 2 randomized clinical trials (prevention and treatment risedronate) using similar methods, but different inclusion criteria applied with regard to prior exposure GCs. Predictors fracture the placebo group identified Cox regression forward selection. The BMD analysis involved comparison 1‐year...

10.1002/art.11283 article EN Arthritis & Rheumatism 2003-11-01

Administration of oral corticosteroids is associated with the development osteoporosis and an increased risk fractures. However, size treated sub‐population who would benefit from preventive therapy remains uncertain. The objective this study was to investigate usage pattern in a large sample representative general population England Wales. Information obtained General Practice Research Database (GPRD) which contains medical records practitioners. Oral corticosteroid users were patients aged...

10.1093/qjmed/93.2.105 article EN QJM 2000-02-01

<b>Objective:</b> To assess whether use of oral glucocorticoids is associated with cardiovascular and cerebrovascular morbidity. <b>Design setting:</b> Nested case–control study within a cohort patients (⩾ 50 years old) at least one prescription for or non-systemic glucocorticoids. Data were from the general practice research database. <b>Patients:</b> 656 identified first record ischaemic heart disease (<i>International classification diseases</i>, ninth revision (ICD-9) codes 410, 411,...

10.1136/hrt.2003.020180 article EN Heart 2004-07-14

BackgroundEthnicity recording across the National Health Service (NHS) has improved dramatically over past decade. This study profiles completeness, consistency and representativeness of routinely collected ethnicity data in both primary care hospital settings.

10.1093/pubmed/fdt116 article EN cc-by Journal of Public Health 2013-12-08

Summary Atrial fibrillation (AF) carries an increased risk of ischaemic stroke, and oral anticoagulation with warfarin can reduce this risk. The objective study was to evaluate the association between time in therapeutic International Normalised Ratio (INR) range when receiving stroke mortality. cohort included AF patients aged 40 years older UK General Practice Research Database. For treated we computed percentage follow-up spent within range. Cox regression used assess INR outcomes while...

10.1160/th11-05-0353 article EN Thrombosis and Haemostasis 2011-01-01

<b>Objective</b> To determine the completeness and diagnostic validity of myocardial infarction recording across four national health record sources in primary care, hospital a disease registry, mortality register. <b>Design</b> Cohort study. <b>Participants</b> 21 482 patients with acute England between January 2003 March 2009, identified prospectively collected, linked electronic sources: Clinical Practice Research Datalink (primary care data), Hospital Episode Statistics (hospital...

10.1136/bmj.f2350 article EN cc-by-nc BMJ 2013-05-21

Cohort evidence linking long-term exposure to outdoor particulate air pollution and mortality has come largely from the United States. There is relatively little nationally representative cohorts in other countries.

10.1164/rccm.201210-1758oc article EN American Journal of Respiratory and Critical Care Medicine 2013-05-23

Evidence based largely on US cohorts suggests that long-term exposure to fine particulate matter is associated with cardiovascular mortality. There less evidence for other pollutants and morbidity. By using a cohort of 836,557 patients age 40 89 years registered 205 English general practices in 2003, we investigated relationships between ambient outdoor air pollution incident myocardial infarction, stroke, arrhythmia, heart failure over 5-year period.Events were identified from primary care...

10.1097/ede.0b013e318276ccb8 article EN Epidemiology 2012-12-05

Objectives Overutilisation of antibiotics may contribute to the emergence antimicrobial drug resistance, a growing international concern. This study aimed analyse performance UK general practices with respect antibiotic prescribing for respiratory tract infections (RTIs) among young and middle-aged adults. Setting Data are reported 568 contributing Clinical Practice Research Datalink. Participants were adults aged 18–59 years. Consultations identified acute upper RTIs including colds, cough,...

10.1136/bmjopen-2014-006245 article EN cc-by BMJ Open 2014-10-01

What was already known .Primary care databases, containing validated data coded in electronic medical records provide a powerful source of for epidemiological research. .Several methods have been used to assess the completeness and accuracy registers such data.What this study added our knowledge .We report, first time, usefulness rate comparison as valid method establishing researchusable within primary records. also introduce SIDIAP scientific community.SIDIAP is one few databases...

10.14236/jhi.v19i3.806 article EN Journal of Innovation in Health Informatics 2011-06-01
Coming Soon ...