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2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006
| Keane MG, Horsfall L, Rait G, Pereira SP. A case–control study comparing the incidence of early symptoms in pancreatic and biliary tract cancer. BMJ Open (2014) 4:e005720 | [Journal] |
| 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] |
| Dhiman P, Kai J, Horsfall L, Walters K, Qureshi N. Availability and Quality of Coronary Heart Disease Family History in Primary Care Medical Records: Implications for Cardiovascular Risk Assessment. PLoS ONE (2014) 9(1):e81998 | [Journal] [PubMed] |
| 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] |
| 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 childmaltreatment 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] [PubMed] |
| 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] [PubMed] |
| 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] [PubMed] |
| 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] [PubMed] |
| 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] [PubMed] |
| 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] [PubMed] |
| 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] |