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Institute of Epidemiology & Health Care

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Publications

2018 | 2017 |2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006

2019

Arendt JF, Sorensen HT, Horsfall LJ, Petersen I (2019). Elevated vitamin B12 levels and cancer risk in UK primary care: a THIN database cohort study. Cancer Epidemiol Biomarkers Prev. doi: 10.1158/1055-9965.EPI-17-1136.[Journal]
Petersen I, Welch C, Nazareth I, Walters K, Marston L, Morris RW, Carpenter JR, Morris TP, Pham T (2019). Health indicator recording in UK primary care electronic health records: key implications for handling missing data. Clinical Epidemiology. doi:10.2147/CLEP.S191437. [Journal]

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2018
Paige E, Barrett J, Stevens D, Keogh RH, Sweeting MJ, Nazareth I, Petersen I, Wood AM (2018). Landmark Models for Optimizing the Use of Repeated Measurements of Risk Factors in Electronic Health Records to Predict Future Disease Risk. American Journal of Epidemiology. doi: 10.1093/aje/kwy018[Journal]
Bastaki H, Marston L, Cassell J, Rait G (2018). Imported malaria in the UK, 2005 to 2016: Estimates from primary care electronic health records. PLoS ONE. 13(12): e0210040. doi: 10.1371/journal.pone.0210040.[Journal]
Sharma M, Nazareth I, Petersen I (2018). Observational studies of treatment effectiveness: worthwhile or worthless?. Clinical Epidemiology. doi:10.2147/CLEP.S178723. [Journal]
Petersen I, Peltola T, Kaski S, Walters K R, Hardoon S (2018). Depression, depressive symptoms and treatments in women who have recently given birth: UK cohort study. BMJ Open. 8:e022152. doi: 10.1136/bmjopen-2018-022152.[Journal]
Pham TM, Carpenter JR, Morris TP, Wood AM, Petersen I (2018). Population-calibrated multiple imputation for a binary/categorical covariate in categorical regression models. Statistics in Medicine. 1-17. doi: 10.1002/sim.8004.[Journal]
Pal K, Petersen I, Mukadam N, Petersen I, Cooper C (2018). Mild cognitive impairment and progression to dementia in people with diabetes, prediabetes and metabolic syndrome: a systematic review and meta-analysis. Social Psychiatry and Psychiatric Epidemiology. doi: 10.1007/s00127-018-1581-3. [Journal]
Bruun SB, Petersen I, Kristensen NR, Cronin-Fenton D, Pedersen AB (2018).  Selective serotonin reuptake inhibitor use and mortality, postoperative complications, and quality of care in hip fracture patients: a Danish nationwide cohort study. Clinical Epidemiology 10:1053-1071. doi: 10.2147/CLEP.S166309.[Journal]
Pham TM, Petersen I, Walters K, Raine R, Manthorpe J, Mukadam N, Cooper C (2018). Trends in dementia diagnosis rates in UK ethnic groups: analysis of UK primary care data. Clinical Epidemiology 10: 949-960. doi: 10.2147/CLEP.S152647.[Journal]
Osborn D, Petersen I, Beckley N et al (2018). Weight change over two years in people prescribed olanzapine, quetiapine and risperidone in UK primary care: Cohort study in THIN, a UK primary care database. Journal of Psychopharmacology. doi: 10.1177/0269881118780011.[Journal]

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2017
Blackburn R, Osborn D, Walters K, Nazareth I, Petersen I (2017). Statin prescribing for prevention of cardiovascular disease amongst people with severe mental illness: Cohort study in UK primary care. Schizophrenia Research. doi: 10.1016/j.schres.2017.05.028.[Journal]
Laugesen K, Jørgensen JOL, Sørensen HT, Petersen, I (2017). Systemic glucocorticoid use in Denmark: a population-based prevalence study. BMJ Open 7:e015237. doi: 10.1136/bmjopen-2016-015237.[Journal]
Fardet L, Nazareth I, Petersen I (2017). Association between long-term quinine exposure and all-cause mortality. JAMA 317(18):1907-1909. doi: 10.1001/jama.2017.2332.[Journal]
Ponjoan A, Blanch J, Alves-Cabratosa L, Martí-Lluch R, Comas-Cufí M, Parramon D, del Mar Garcia-Gil M, Ramos R, Petersen I (2017). Effects of extreme temperatures on cardiovascular emergency hospitalizations in a Mediterranean region: a self-controlled case series study. Environmental Health 16:32. doi: 10.1186/s12940-017-0238-0.[Journal]
King M, Lodwick R, Jones R, Whitaker H, Petersen I (2017). Death following partner bereavement: A self-controlled case series analysis. PLOS ONE 12(3): e0173870. doi: 10.1371/journal.pone.0173870.[Journal]
Pedersen AB, Mikkelsen EM, Cronin-Fenton D, Kristensen NR, Pham TM, Pedersen L, Petersen I (2017). Missing data and multiple imputation in clinical epidemiological research. Clinical Epidemiology 9:157-166. doi: 10.2147/CLEP.S129785.[Journal]
Blackburn R, Osborn D, Walters K, Falcaro M, Nazareth I, Petersen I (2017). Statin prescribing for people with severe mental illnesses: a staggered cohort study of 'real-world' impacts. BMJ Open 7:e013154. doi: 10.1136/bmjopen-2016-013154.[Journal]
Shallcross L, Beckley N, Rait G, Hayward A, Petersen I (2017). Antibiotic prescribing frequency amongst patients in primary care: a cohort study using electronic health records. J Antimicrob Chemother dkx048. doi: 10.1093/jac/dkx048.[Journal]
Petersen I, Collings SL, McCrea RL, Nazareth I, Osborn DP, Cowen PJ, Sammon CJ (2017). Antiepileptic drugs prescribed in pregnancy and prevalence of major congenital malformations: comparative prevalence studies. Journal of Clinical Epidemiology 9:95-103.[Journal]
Gilbert H, Sutton S, Morris R, Petersen I, Galton S, Wu Q, Parrott S, Nazareth I (2017). Effectiveness of personal tailored risk information and taster sessions to increase the uptake of smoking cessation services: randomized controlled trial (Start2quit). The Lancet. doi: 10.1016/S0140-6736(16)32379-0 [Journal]
Gilbert H, Sutton S, Morris R, Petersen I, Wu Q, Parrott S, Galton S, Kale D, Magee MS, Gardner L, Nazareth, I. (2017). Start2quit: a randomised clinical controlled trial to evaluate the effectiveness and cost-effectiveness of using personal tailored risk information and taster sessions to increase the uptake of the NHS Stop Smoking Services. Health Technology Assessment 21(3):1-206. doi: 10.3310/hta21030[Journal]

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2016
Ford E, Carroll J, Smith H, Davies K, Koeling R, Petersen I, Rait G, Cassell J (2016). What evidence is there for a delay in diagnostic coding of RA in UK general practice records? An observational study of free text. BMJ Open 6(6). doi:10.1136/bmjopen-2015-010393.[Journal]
Osborn D, Burton A, Walters K, Nazareth I, Heinkel S, Atkins L, Blackburn R, Holt R, Hunter R, King M, Marston L, Michie S, Morris R, Morris S, Omar R, Peveler R, Pinfold V, Zomer E, Barnes T, Craig T, Gilbert H, Grey B, Johnston C, Leibowitz J, Petersen I, Stevenson F, Hardy S, Robinson V (2016). Evaluating the clinical and cost effectiveness of a behaviour change intervention for lowering cardiovascular disease risk for people with severe mental illnesses in primary care (PRIMROSE study): study protocol for a cluster randomised controlled trial. Trials 17:80. doi:10.1186/s13063-016-1176-9.  [Journal]
Stevenson F, Hamilton S, Pinfold V, Walker C, Dare CJR, Kaur H, Lambley R,Szymczynska P, Nicolls V, Petersen I (2016). Decisions about the use of psychotropic medication during pregnancy: a qualitative study. BMJ Open 6:e010130. doi:10.1136/bmjopen-2015-010130.[Journal]
Ehrenstein V, Petersen I, Smeeth L, Jick SS, Benchimol EI, Ludvigsson JF, Sørensen HT (2016). Helping everyone do better: a call for validation studies of routinely recorded health data. Clinical Epidemiology 2016(8):49-51.[Journal]
García-Gila M, Parramona D, Comas-Cufía M, Martía R, Ponjoana A, Alves-Cabratosaa L, Blancha J, Petersen I, Elosuae R, Graue M, Salvadora B, Ramosa R (2016). Role of renal function in cardiovascular risk assessment: A retrospective cohort study in a population with low incidence of coronary heart disease. Preventive Medicine 89:200-206. doi:10.1016/j.ypmed.2016.06.004. [Journal]
Mor A, Petersen I, Sørensen H, Thomsen RW (2016). Metformin and other glucose-lowering drug initiation and rates of community-based antibiotic use and hospital-treated infections in patients with type 2 diabetes: a Danish nationwide population-based cohort study. BMJ Open 6(8):e011523. doi:10.1136/bmjopen-2016-011523.[Journal]
Das-Munshi J, Ashworth M, Dewey ME, Gaughran F, Hull S, Morgan C, Nazroo J, Petersen I, Schofield P, Stewart R, Thornicroft G,Prince MJ (2016). Type 2 diabetes mellitus in people with severe mental illness: inequalities by ethnicity and age. Cross-sectional analysis of 588 408 records from the UK. Diabet Med. doi:10.1111/dme.13298 [Journal]
O'Keeffe AG, Nazareth I, Petersen I (2016). Time trends in the prescription of statins for the primary prevention of cardiovascular disease in the United Kingdom: a cohort study using The Health Improvement Network primary care data. Journal of Clinical Epidemiology 8:123-132.[Journal]
Cooper C, Lodwick R, Walters K, Raine R, Manthorpe J, Iliffe S, Petersen, I (2016). Inequalities in receipt of mental and physical healthcare in people with dementia in the UK. Age Ageing. Available online 04 December 2016.[Journal]
Osborn DPJ, Marston L, Nazareth I, King MB, Petersen I, Walters K (2016). Relative risks of cardiovascular disease in people prescribed olanzapine, risperidone and quetiapine. Schizophrenia Research. Available online 22 November 2016.[Journal]
Khadjesari Z, Hardoon SL , Petersen I , Hamilton FL , Nazareth I (2016). Impact of financial incentives on alcohol consumption recording in primary health care among adults with schizophrenia and other psychoses: a cross-sectional and retrospective cohort study. Alcohol and Alcoholism.[Journal]
Sharma M, Petersen I, Nazareth I, Coton SJ (2016). An algorithm for identification and classification of individuals with type 1 and type 2 diabetes mellitus in a large primary care database. Clinical Epidemiology 8:373-380.[Journal]
McCrea RL, Sammon CJ, Nazareth I, Petersen I (2016). Initiation and duration of selective serotonin reuptake inhibitor prescribing over time: UK cohort study. Br J Psychiatry bjp.bp.115.166975.[Journal]
Petersen I, Sammon CJ, McCrea RL, Osborn DP, Evans SJ, Cowen PJ, Nazareth I (2016). Risks associated with antipsychotic treatment in pregnancy: Comparative cohort studies based on electronic health records. Schizophr Res 176(2-3):349-56.[Journal]
Ding T, Baio G, Hardiman PJ, Petersen I, Sammon C (2016). Diagnosis and management of polycystic ovary syndrome in the UK (2004-2014): a retrospective cohort study. BMJ Open 6(7):e012461.[Journal]
Fardet L, Petersen I, Nazareth I (2016). Common Infections in Patients Prescribed Systemic Glucocorticoids in Primary Care: A Population-Based Cohort Study. PLoS Med 13(5): e1002024.[Journal]
Petersen I, McCrea RL, Sammon CJ, Osborn DPJ, Evans SJ, Cowen PJ, Freemantle N, Nazareth I. Risks and benefits of psychotropic medication in pregnancy: cohort studies based on UK electronic primary care records. Health Technology Assessment (2016) 20(23).[Journal]
Sammon CJ, Nazareth I, Petersen I. Recording and treatment of premenstrual syndrome in UK general practice: a retrospective cohort study. BMJ Open (2016) 6:e010244.[Journal]
Hardoon SL, Khadjesari Z, Nazareth I, Hamilton FL, Petersen I. Monitoring of alcohol consumption in primary care among adults with bipolar disorder: a cross-sectional and retrospective cohort study. Journal of Affective Disorders (2016). [epub ahead of print][Journal]
Bachmann CJ, Aagaard L, Burcu M, Glaeske G, Kalverdijk LJ, Petersen I, Schuiling-Veninga CCM, Wijlaars L, Zito JM, Hoffmann F. Trends and patterns of antidepressant use in children and adolescents from five western countries, 2005-2012. European Neuropsychopharmacology (2016) 26(3):411-419.[Journal
Sampson EL, Lodwick R, Rait G, Candy B, Low J, King M, Petersen I. Living With an Older Person Dying From Cancer, Lung Disease, or Dementia: Health Outcomes From a General Practice Cohort Study. Journal of Pain and Symptom Management (2016). [epub ahead of print][Journal]
Sammon CJ, Petersen I. Backdating of events in electronic primary health care data: should one censor at the date of last data collection. Pharmacoepidemiology and Drug Safety (2016). [epub ahead of print][Journal]
Petersen I, Evans SJ, Gilbert R, Marston L, Nazareth I. Selective Serotonin Reuptake Inhibitors and Congenital Heart Anomalies: Comparative Cohort Studies of Women Treated Before and During Pregnancy and Their Children. Journal of Clinical Psychiatry (2016) 77(1):e36-e42[Journal]
Coton SJ, Nazareth I, Petersen I. A cohort study of trends in the prevalence of pregestational diabetes in pregnancy recorded in UK general practice between 1995 and 2012. BMJ Open (2016) 6:e009494[Journal
Walters K, Hardoon S, Petersen I, Iliffe S, Omar RZ, Nazareth I, Rait G. Predicting dementia risk in primary care: development and validation of the Dementia Risk Score using routinely collected data. BMC Medicine (2016) 14:6[Journal]
Sharma M, Nazareth I, Petersen I. Trends in incidence, prevalence and prescribing in type 2 diabetes mellitus between 2000 and 2013 in primary care: a retrospective cohort study. BMJ Open (2016) 6:e010210[Journal]

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2015
Cooper C, Lodwick R, Walters K, Raine R, Manthorpe J, Iliffe S, Petersen I. Observational cohort study: deprivation and access to anti-dementia drugs in the UK. Age and Ageing (2015) [epub ahead of print][Journal]
Petersen I, Nazareth I. Antidepressant dose and risk of deliberate self harm: is it the dose or the indication? JAMA Intern Med (2015) 175(3):463-464[Journal
Shallcross LJ, Hayward AC, Johnson AM, Petersen I. Incidence and recurrence of boils and abscesses within the first year: a cohort study in UK primary care. British Journal of General Practice (2015) 65(639):e668-e676[Journal]
Benchimol EI, Smeeth L, Guttmann A, Harron K, Moher D, Petersen I, Sørensen HT, von Elm E, Langan SM, RECORD Working Committee. The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) Statement. PLoS Medicine (2015) 12(10):e1001885[Journal]
Hardelid P, Rait G, Gilbert R, Petersen I. Recording of Influenza-Like Illness in UK Primary Care 1995-2013: Cohort Study. PLoS ONE (2015) 10(9):e0138659[Journal]
Hardelid P, Rait G, Gilbert R, Petersen I. Prescribing of neuraminidase inhibitors for influenza in UK primary care since the 2009 pandemic. Epidemiology and Infection (2015) [epub ahead of print][Journal]
Fardet L, Nazareth I, Petersen I. Synthetic glucocorticoids and early variations of bloodpressure: a population-based cohort study. Journal of Clinical Endocrinology and Metabolism (2015) [epub ahead of print][Journal]
Nicholls SG, Quach P, von Elm E, Guttmann A, Moher D, Petersen I, Sørensen HT, Smeeth L, Langan SM, Benchimol EI. The REporting of Studies Conducted Using Observational Routinely-Collected Health Data (RECORD) Statement: Methods for Arriving at Consensus and Developing Reporting Guidelines. PLoS ONE (2015) 10(4):e0125620[Journal]
Davies HR, Nazareth I, Petersen I. Trends of People Using Drugs and Opioid Substitute Treatment Recorded in England and Wales General Practice (1994-2012). PLoS ONE (2015) 10(4):e0122626[Journal]
Fardet L, Petersen I, Nazareth I. Monitoring of Patients on Long-Term Glucocorticoid Therapy: A Population-Based Cohort Study. Medicine (2015) 94(15):e647[Journal]
McCrea RL, Nazareth I, Evans SJW, Osborn DPJ, Pinfold V, Cowen PJ, Petersen I. Lithium Prescribing during Pregnancy: A UK Primary Care Database Study. PLoS ONE (2015) 10(3):e0121024[Journal]
Meeraus WH, Petersen I, Gilbert R. Association between Antibiotic Prescribing in Pregnancy and Cerebral Palsy or Epilepsy in Children Born at Term: A Cohort Study Using The Health Improvement Network. PLoS ONE (2015) 10(3):e0122034[Journal]
O'Keeffe AG, Petersen I, Nazareth I. Initiation rates of statin therapy for the primary prevention of cardiovascular disease: an assessment of differences between countries of the UK and between regions within England. BMJ Open (2015) 5:e007207[Journal]
Petersen I, McCrea RL, Lupattelli A, Nordeng H (2015). Women's perception of risks of adverse fetal pregnancy outcomes: a large-scale multinational survey. BMJ Open 5(6):e007390. doi:10.1136/bmjopen-2014-007390 [Journal]

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2014
Shallcross LJ, Hayward AC, Johnson AM, Petersen I. Evidence for increasing severity of community-onset boils and abscesses in UK General Practice. Epidemiology and Infection (2014) [epub ahead of print][Journal]
Osborn DPJ, Hardoon S, Omar RZ, Holt RIG, King M, Larsen J, Marston L, Morris RW, Nazareth I, Walters K, Petersen I. Cardiovascular Risk Prediction Models for People With Severe Mental Illness: Results From the Prediction and Management of Cardiovascular Risk in People With Severe Mental Illnesses (PRIMROSE) Research Program. JAMA Psychiatry (2014) [epub ahead of print][Journal]
Marston L, Nazareth I, Petersen I, Walters K, Osborn D. Prescribing of antipsychotics in UK primary care: a cohort study. BMJ Open (2014) 4:e006135[Journal]
Buszewicz M, Welch C, Horsfall L, Nazareth I, Osborn D, Hassiotis A, Glover G, Chauhan U, Hoghton M et al. Assessment of an incentivised scheme to provide annual health checks in primary care for adults with intellectual disability: a longitudinal cohort study. The Lancet Psychiatry (2014) [epub ahead of print][Journal]
Schrag A, Horsfall L, Walters K, Noyce A, Petersen I. Prediagnostic presentations of Parkinson's disease in primary care: a case-control study. The Lancet Neurology (2014) [epub ahead of print][Journal]
O'Keeffe AG, Geneletti S, Baio G, Sharples LD, Nazareth I, Petersen I. Regression discontinuity designs: an approach to the evaluation of treatment efficacy in primary care using observational data. BMJ (2014). [epub ahead of print] [Journal]
Petersen I, McCrea RL, Osborn DJP, Evans S, Pinfold V, Cowen PJ, Gilbert R, Nazareth I. Discontinuation of antipsychotic medication in pregnancy: A cohort study. Schizophrenia Research (2014). [epub ahead of print][Journal]
[PubMed]
Horsfall LJ, Nazareth I, Petersen I. Serum uric acid and the risk of respiratory disease: a population-based cohort study. Thorax (2014). [epub ahead of print][Journal]
[PubMed]
Welch CA, Petersen I, Bartlett JW, White IR, Marston L, Morris RW, Nazareth I, Walters K, Carpenter J. Evaluation of two-fold fully conditional specification multiple imputation for longitudinal electronic health record data. Statistics in Medicine (2014). [epub ahead of print][Journal]
[PubMed]
Marston L, Carpenter JR, Walters KR, Morris RW, Nazareth I, White IR, Petersen I. Smoker, ex-smoker or non-smoker? The validity of routinely recorded smoking status in UK primary care: a cross-sectional study. BMJ Open (2014) 4:e004958.[Journal]
[PubMed]

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2013
Horsfall L, Petersen I, Walters K, Schrag A. Time trends in incidence of Parkinson's disease diagnosis in UK primary care. Journal of Neurology (2013);260(5):1351-7.[Journal]
[PubMed]
Hardoon S, Hayes JF, Blackburn R, Petersen I, Walters K, Nazareth I, Osborn DP. Recording of severe mental illness in United Kingdom primary care, 2000-2010. PLoS One (2013) 12;8(12):e82365.[Journal]
[PubMed]
Freemantle N, Marston L, Walters K, Wood J, Reynolds MR, Petersen I. Making inferences on treatment effects from real world data: propensity scores, confounding by indication, and other perils for the unwary in observational research. BMJ (2013) 347.

[Journal]

[PubMed]

Khadjesari Z, Marston L, Petersen I, Nazareth I, Walters K. Alcohol consumption screening of newly-registered patients in primary care: a cross-sectional analysis. British Journal of General Practice (2013) 63(615):706-12.[Journal]

[PubMed]
Shallcross LJ, Petersen I, Rosenthal J, Johnson AM, Freemantle N, Hayward AC. Use of primary care data for detecting impetigo trends, United Kingdom, 1995-2010. Emerging Infectious Diseases (2013) 19(10):1646-8.[Journal]
[PubMed]
Wijlaars LPMM, Nazareth I, Whitaker HJ, Evans SJW, Petersen I. Suicide-related events in young people following prescription of SSRIs and other antidepressants: a self-controlled case series analysis. BMJ Open (2013).[Journal]
[PubMed]
Grant RL, Drennan VM, Rait G, Petersen I, Iliffe S. First diagnosis and management of incontinence in older people with and without dementia in primary care: a cohort study using The Health Improvement Network primary care database. PLoS Medicine (2013).[Journal]
[PubMed]
Wang Y, Hunt K, Nazareth I, Freemantle N, Petersen I. Do men consult less than women? An analysis of routinely collected UK general practice data. BMJ Open (2013).[Journal]
[PubMed]
Ford E, Nicholson A, Koeling R, Tate AR, Carrol J, Axelrod L, Smith HE, Rait G, Davies KA, Petersen I, Williams T, Cassell JA. Optimising the use of electronic health records to estimate the incidence of rheumatoid arthritis in primary care: what information is hidden in free text? BMC medical research methodology (2013)[Journal
[PubMed]
Benchimol EI, Langan S, Guttmann A, Moher D, Petersen I, Smeeth L, Sørensen H, Stanley F. Call to RECORD: the need for complete reporting of research using routinely collected health data. Journal of Clinical Epidemiology (2013).[Journal]
[PubMed]
Welch C, Bartlett J, Petersen I. Application of multiple imputation using the two-fold fully conditional specification algorithm in longitudinal clinical data. The Stata Journal (2013). [epub ahead of print][pre-publication copy]
James GD, Petersen I, Nazareth I, Wedzicha JA, Donaldson GC. Use of long-term antibiotic treatment in COPD patients in the UK: a retrospective cohort study. Primary Care Respiratory Journal (2013). [epub ahead of print][Journal]
[PubMed]
Micali N, Hagberg KW, Petersen I, Treasure JL. The incidence of eating disorders in the UK in 2000-2009: findings from the General Practice Research Database. BMJ Open (2013) 3:e002646.[Journal]
[PubMed]
Horsfall LJ, Nazareth I, Pereira SP, Petersen I. Gilbert's syndrome and the risk of death: a population-based cohort study. Clinical Hepatology (2013). [epub ahead of print][Journal]
[PubMed]
Fardet L, Nazareth I, Whitaker HJ, Petersen I. Severe neuropsychiatric outcomes following discontinuation of long-term glucocorticoid therapy: a cohort study. Journal of Clinical Psychiatry (2013) 74(4):e281-6.[Journal]
[PubMed]
Langan SM, Benchimol EI, Guttmann A, Moher D, Petersen I, Smeeth L, Sørensen HT, Stanley F, Von Elm E. Setting the RECORD straight: developing a guideline for the REporting of studies Conducted using Observational Routinely collected Data. Clinical Epidemiology (2013) 5;29-31.[Journal]
[PubMed]
Nicholson A, Ford E, Davies KA, Smith HE, Rait G, Tate AR, Petersen I, Cassell J. Optimising Use of Electronic Health Records to Describe the Presentation of Rheumatoid Arthritis in Primary Care: A Strategy for Developing Code Lists. PLoS ONE (2013) e54878.[Journal]
[PubMed]
Meeraus WH, Petersen I, Chin RF, Knott F, Gilbert R. Childhood epilepsy recorded in primary care in the UK. Archives of Disease in Childhood (2013). [epub ahead of print][Journal] [Editorial]

[PubMed]
King M, Vasanthan M, Petersen I, Jones L, Marston L, Nazareth I. Mortality and Medical Care after Bereavement: A General Practice Cohort Study. PLoS ONE (2013) e52561.[Journal]
[PubMed]

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 2012 
Man S, Petersen I, Thompson M, Nazareth I. Antiepileptic Drugs during Pregnancy in Primary Care: A UK Population Based Study. PLoS ONE (2012) 7(12): e52339.[Journal]
[PubMed]
Osborn DPJ, Limburg H, Walters K, Petersen I, King M, Green J, Watson J, Nazareth I. Relative incidence of common cancers in people with severe mental illness. Cohort study in the United Kingdom THIN primary care database. Schizophrenia Research (2012). [epub ahead of print][Journal]
[PubMed]
Woodman J, Freemantle N, Allister J, de Lusignan S, Gilbert R, Petersen I. Variation in Recorded Child Maltreatment Concerns in UK Primary Care Records: A Cohort Study Using The Health Improvement Network (THIN) Database. PLoS ONE (2012) 7(11): e49808. [Journal]

[PubMed]
Horsfall L, Walters K, Petersen I. Identifying periods of acceptable computer usage in primary care research databases. Pharmacoepidemiology & Drug Safety 2012. [epub ahead of print][Journal]

[PubMed]
Horsfall LJ, Nazareth I, Petersen I. Cardiovascular Events as a Function of Serum Bilirubin Levels in a Large Statin-Treated Cohort. Circulation 2012 [epub ahead of print][Journal] [Editorial]

[PubMed]
Osborn DP, Horsfall L, Hassiotis A, Petersen I, Walters K, Nazareth I. Access to Cancer Screening in People with Learning Disabilities in the UK: Cohort Study in The Health Improvment Network, a Primary Care Research Database. PLoS One 2012;7(8):e43841[Journal]

[PubMed]
Walters K, Rait G, Griffin M, Buszewicz M, Nazareth I. Recent trends in the incidence of axiety diagnoses and symptoms in primary care. PloS One 2012;7(8):e41670[Journal]

[PubMed]
Fardet L, Petersen I, Nazareth, I. Risk of cardiovascular events in people prescribed glucocorticoids with iatrogenic Cushing's syndrome: cohort study. BMJ 2012;345:e4928[Journal]

[PubMed]
Woodman J, Allister J, Rafi I, de Lusignan S, Belsey J, Petersen I, Gilbert R. A simple approach to improve recording of concerns about child maltreatment in primary care records: developing a quality improvement intervention. British Journal of General Practice. 2012;62(600):e478-e486(9)[Journal]

[PubMed]
Walters K, Rait G, Hardoon S, Kalaitzaki E, Petersen I, Nazareth I. (2012) Socio-demographic variation in chest pain incidence and subsequent coronary heart disease in primary care in the United Kingdom. Eur J Prev Cardiol. [epub ahead of print][Journal]

[Pubmed]
Wijlaars LPMM, Nazareth I, Petersen I (2012) Trends in Depression and Antidepressant Prescribing in Children and Adolescents: A Cohort Study in The Health Improvement Network (THIN). PLoS One. 2012;7(3):e33181[Journal]

[PubMed]
Fardet L, Petersen I, Nazareth I. Suicidal behavior and severe neuropsychiatric disorders following glucocorticoid therapy in primary care. American Journal of Psychiatry. 2012;169(5):491-7[Journal]

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2011 
Horsfall LJ, Rait G, Walters K, Swallow DM, Pereira SP, Nazareth I, Petersen I (2011) Serum bilirubin and risk of respiratory disease and death. JAMA. 2011 Feb 16;305(7):691-7[Journal]

[PubMed]
Hayes J, Prah P, Nazareth I, King M, Walters K, Petersen I, Osborn D (2011) Prescribing Trends in Bipolar Disorder: Cohort Study in the United Kingdom THIN Primary Care Database 1995-2009. PLoS One. 2011;6(12):e28725[Journal]

[PubMed]
Welch C, Petersen I, Walters K, Morris RW, Nazareth I, Kalaitzaki E, White IR, Marston L, Carpenter J (2011) Two-stage method to remove population- and individual-level outliers from longitudinal data in a primary care database. Pharmacoepidemiology and Drug Saftey (Epub ahead of print)

[Journal]

[PubMed]

Prah P, Petersen I, Nazareth I, Walters K, Osborn D. (2011) National changes in oral antipsychotic treatment for people with schizophrenia in primary care between 1998 and 2007 in the United Kingdom. Pharmacoepidemiol Drug Saf. Epub[Journal]

[PubMed]
Osborn D.P, Baio G, Walters K, Petersen I, Limburg, H, Raine R, Nazareth I. (2011) Inequalities in the provision of cardiovascular screening to people with severe mental illnesses in primary care Cohort study in the United Kingdom THIN Primary Care Database 2000-2007. Schizophrenia Research. 129(2-3): p. 104-10 [Journal]

[PubMed]
Grosso A, Douglas I, MacAllister R, Petersen I, Smeeth L, Hingorani AD. (2011) Use of the self-controlled case series method in drug safety assessment. Expert Opinion on Drug Safety. 10(3): p. 337-340[Journal]

[PubMed]
Fardet L, Petersen I, Nazareth I.(2011) [Description of oral glucocorticoid prescriptions in general population.]. Rev Med Interne. 2011 Mar 18, Epub. French[Journal]

[PubMed]
Fardet L, Petersen I, Nazareth I. (2011) Prevalence of long-term oral glucocorticoid Prescriptions in UK over the past 20 years. Rheumatology (Oxford). Nov;50(11):1982-90[Journal]

[PubMed]
Petersen I, Gilbert RE, Evans SJ, Man SL, Nazareth I. (2011) Pregnancy as a major determinant for discontinuation of antidepressants: an analysis of data from The Health Improvement Network. J Clin Psychiatry. Mar 8[Journal]

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2010 
Davé, S., Petersen, I., Sherr, L., Nazareth, I. (2010). Incidence of maternal and paternal depression in primary care: a cohort study using a primary care database. Arch Pediatr Adolesc Med 164(11), 1038-1044[Journal] [Editorial]

[PubMed]
Hardoon, S. L., Whincup, P. H., Petersen, I., Capewell, S., Morris, R. W. (2010). Trends in longer-term survival following an acute myocardial infarction and prescribing of evidenced-based medications in primary care in the UK from 1991: a longitudinal population-based study. J Epidemiol Community Health[Journal]

[PubMed]
Marston, L., Carpenter, J. R., Walters, K. R., Morris, R. W., Nazareth, I., Petersen, I. (2010). Issues in multiple imputation of missing data for large general practice clinical databases. Pharmacoepidemiol Drug Saf 19(6), 618-626[Journal]

[PubMed]
Petersen, I., Gilbert, R., Evans, S., Ridolfi, A., Nazareth, I. (2010). Oral antibiotic prescribing during pregnancy in primary care: UK population-based study. Journal of antimicrobial chemotherapy 65(10), 2238-2246, 10[Journal]

[PubMed]
Rait, G., Walters, K., Bottomley, C., Petersen, I., Iliffe, S., Nazareth, I. (2010). Survival of people with clinical diagnosis of dementia in primary care: cohort study. BMJ 341, c3584-[Journal]

[PubMed
McBride, D., Hardoon, S., Walters, K., Gilmour, S., Raine, R. (2010). Explaining variation in referral from primary care to secondary care: cohort study. BMJ 341:c6267[Journal]

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2009
Davé, S., Petersen, I. (2009). Creating medical and drug code lists to identify cases in primary care databases. Pharmacoepidemiology and Drug Safety 18(8), 704-707[Journal]

[PubMed]
Evans, H. E. R., Tsourapas, A., Mercer, C. H., Rait, G., Bryan, S., Hamill, M., Delpech, V., Hughes, G., Brook, G., Williams, T., Johnson, A. M., Singh, S., Petersen, I., Chadborn, T., Cassell, J. A. (2009). Primary care consultations and costs among HIV positive individuals in UK primary care 1995-2005: A cohort study. Sexually Transmitted Infections 85, 543-549[Journal]

[PubMed]
Evans, H. E., Mercer, C. H., Rait, G., Hamill, M., Delpech, V., Hughes, G., Brook, G., Williams, T., Johnson, A. M., Singh, S., Petersen, I., Chadborn, T., Cassell, J. A. (2009). Trends in HIV testing and recording of HIV status in the UK primary care setting: a retrospective cohort study 1995-2005. Sexually Transmitted Infections 85(7), 520-526[Journal]

[PubMed]
Morris, R., Petersen, I., Marston, L., Walters, K., Carpenter, J., Nazareth, I. (2009). QRISK validation and evaluation. Bespoke cohort studies needed. BMJ 339, b3512-[Journal]

[PubMed]
Raine, R., Petersen, I., Wong, W., Ambler, G., Hardoon, S., Morris, R. (2009). Sociodemographic variations in the contribution of secondary drug prevention to stroke survival at middle and older ages: cohort study. BMJ (Clinical Research Ed.) 338, b1279-[Journal]

[PubMed]
Rait, G., Walters, K., Griffin, M., Buszewicz, M., Petersen, I., Nazareth, I. (2009). Recent trends in the incidence of recorded depression in primary care. British Journal of Psychiatry 195(6), 520-524[Journal]

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2008
Hayward, A., Knott, F., Petersen, I., Livermore, D. M., Duckworth, G., Islam, A., Johnson, A. M. (2008). Increasing hospitalizations and general practice prescriptions for community-onset staphylococcal disease, England. Emerging Infectious Diseases 14(5), 720-726[Journal]

[PubMed]
Omar, R. Z., O'Sullivan, C., Petersen, I., Islam, A., Majeed, A. (2008). A model based on age, sex, and morbidity to explain variation in UK general practice prescribing: cohort study. BMJ (Clinical Research Ed.) 337, a238-[Journal]

[PubMed]
Walters, K., Rait, G., Petersen, I., Williams, R., Nazareth, I. (2008). Panic disorder and risk of new onset coronary heart disease, acute myocardial infarction, and cardiac mortality: cohort study using the general practice research database. European Heart Journal 29(24), 2981-2988[Journal]

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 2007 
Osborn, D. P. J., Levy, G., Nazareth, I., Petersen, I., Islam, A., King, M. B. (2007). Relative risk of cardiovascular and cancer mortality in people with severe mental illness from the United Kingdom's general practice research database. Archives of General Psychiatry 64(2), 242-249[Journal]

[PubMed]
Petersen, I., Hayward, A. C., Sacar, S. S. (2007). Antibacterial prescribing in primary care. Journal of Antimicrobial Chemotherapy 60(Sup1), i43-i47[Journal]

[PubMed]
Petersen, I., Johnson, A. M., Islam, A., Duckworth, G. M., Livermore, D., Hayward, A. (2007). Protective effect of antibiotics against serious complications of common respiratory tract infections: retrospective cohort study with the UK General Practice Research Database. BMJ (Clinical Research Ed.) 335(7627), 982-984[Journal]

[PubMed]
Tam, C. C., O'Brien, S. J., Petersen, I., Islam, A., Hayward, A., Rodrigues, L. C. (2007). Guillain-Barré syndrome and preceding infection with campylobacter, influenza and Epstein-Barr virus in the general practice research database. PLoS ONE 2(4), e344-[Journal]

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2006
Cassell, J. A., Mercer, C. H., Sutcliffe, L., Petersen, I., Islam, A., Brook, M. G., Ross, J. D., Kinghorn, G. R., Simms, I., Hughes, G., Majeed, A., Stephenson, J. M., Johnson, A. M., Hayward, A. (2006). Trends in sexually transmitted infections in general practice 1990-2000: population based study using data from the UK General Practice Research Database. BMJ (Clinical Research Ed.) 332(7537), 332-334[Journal]

[PubMed]
Petersen, I., Thomas, J. M., Hamilton, W. T., White, P. D. (2006). Risk and predictors of fatigue after infectious mononucleosis in a large primary-care cohort. QJM 99(1), 49-55[Journal]

[PubMed]
Tam, C. C., Rodrigues, L. C., Petersen, I., Islam, A., Hayward, A., O'Brien, S. J. (2006). Incidence of Guillain-Barre syndrome among patients with Campylobacter infection: a general practice research database study. The Journal of Infectious Diseases 194(1), 95-97[Journal]

[PubMed]