Works by Petersen, Irene

Results: 143

Development and external validation of the electronic frailty index 2 using routine primary care electronic health record data.

Published in:

Age & Ageing, 2025, v. 54, n. 4, p. 1, doi. 10.1093/ageing/afaf077

By:

Best, Kate;
Shuweihdi, Farag;
Alvarez, Juan Carlos Bazo;
Relton, Samuel;
Avgerinou, Christina;
Nimmons, Danielle;
Petersen, Irene;
Pujades-Rodriguez, Maria;
Conroy, Simon Paul;
Walters, Kate;
West, Robert M;
Clegg, Andrew

Publication type:

Article

Drug-induced orthostatic hypotension: A systematic review and meta-analysis of randomised controlled trials.

Published in:

2021

By:

Bhanu, Cini;
Nimmons, Danielle;
Petersen, Irene;
Orlu, Mine;
Davis, Daniel;
Hussain, Hajra;
Magammanage, Sanuri;
Walters, Kate

Publication type:

journal article

Fatal opioid overdoses during and shortly after hospital admissions in England: A case-crossover study.

Published in:

PLoS Medicine, 2021, v. 18, n. 10, p. 1, doi. 10.1371/journal.pmed.1003759

By:

Lewer, Dan;
Eastwood, Brian;
White, Martin;
Brothers, Thomas D.;
McCusker, Martin;
Copeland, Caroline;
Farrell, Michael;
Petersen, Irene

Publication type:

Article

Infections in temporal proximity to HPV vaccination and adverse effects following vaccination in Denmark: A nationwide register-based cohort study and case-crossover analysis.

Published in:

2021

By:

Krogsgaard, Lene Wulff;
Petersen, Irene;
Plana-Ripoll, Oleguer;
Bech, Bodil Hammer;
Lützen, Tina Hovgaard;
Thomsen, Reimar Wernich;
Rytter, Dorte

Publication type:

journal article

Predictive values for different cancers and inflammatory bowel disease of 6 common abdominal symptoms among more than 1.9 million primary care patients in the UK: A cohort study.

Published in:

2021

By:

Herbert, Annie;
Rafiq, Meena;
Pham, Tra My;
Renzi, Cristina;
Abel, Gary A.;
Price, Sarah;
Hamilton, Willie;
Petersen, Irene;
Lyratzopoulos, Georgios

Publication type:

journal article

Use of long-term antibiotic treatment in COPD patients in the UK: a retrospective cohort study.

Published in:

Primary Care Respiratory Journal, 2013, v. 22, n. 3, p. 271, doi. 10.4104/pcrj.2013.00061

By:

Russell James, Gareth Dean;
Petersen, Irene;
Nazareth, Irwin;
Wedzicha, Jadwiga A.;
Donaldson, Gavjn C.

Publication type:

Article

Time Trends in Incidence of Reported Memory Concerns and Cognitive Decline: A Cohort Study in UK Primary Care.

Published in:

Clinical Epidemiology, 2022, v. 15, p. 395, doi. 10.2147/CLEP.S350396

By:

Hallam, Brendan;
Petersen, Irene;
Cooper, Claudia;
Avgerinou, Christina;
Walters, Kate

Publication type:

Article

Recalibrating SARS-CoV-2 Antigen Rapid Lateral Flow Test Relative Sensitivity from Validation Studies to Absolute Sensitivity for Indicating Individuals Shedding Transmissible Virus.

Published in:

Clinical Epidemiology, 2021, v. 13, p. 935, doi. 10.2147/CLEP.S311977

By:

Petersen, Irene;
Crozier, Alexander;
Buchan, Iain;
Mina, Michael J;
Bartlett, Jonathan W

Publication type:

Article

Current Practices in Missing Data Handling for Interrupted Time Series Studies Performed on Individual-Level Data: A Scoping Review in Health Research.

Published in:

Clinical Epidemiology, 2021, v. 13, p. 603, doi. 10.2147/CLEP.S314020

By:

Bazo-Alvarez, Juan Carlos;
Morris, Tim P;
Carpenter, James R;
Petersen, Irene

Publication type:

Article

Smoking and COVID-19 Infection and Related Mortality: A Prospective Cohort Analysis of UK Biobank Data.

Published in:

Clinical Epidemiology, 2021, v. 13, p. 357, doi. 10.2147/CLEP.S300597

By:

Prats-Uribe, Albert;
Xie, Junqing;
Prieto-Alhambra, Daniel;
Petersen, Irene

Publication type:

Article

Three Quarters of People with SARS-CoV-2 Infection are Asymptomatic: Analysis of English Household Survey Data.

Published in:

Clinical Epidemiology, 2020, v. 12, p. 1039, doi. 10.2147/CLEP.S276825

By:

Petersen, Irene;
Phillips, Andrew

Publication type:

Article

Handling Missing Values in Interrupted Time Series Analysis of Longitudinal Individual-Level Data.

Published in:

Clinical Epidemiology, 2020, v. 12, p. 1045, doi. 10.2147/CLEP.S266428

By:

Bazo-Alvarez, Juan Carlos;
Morris, Tim P;
Pham, Tra My;
Carpenter, James R;
Petersen, Irene

Publication type:

Article

Impact of Being Eligible for Type 2 Diabetes Treatment on All-Cause Mortality and Cardiovascular Events: Regression Discontinuity Design Study.

Published in:

Clinical Epidemiology, 2020, v. 12, p. 569, doi. 10.2147/CLEP.S251704

By:

Petersen, Irene;
Nicolaisen, Sia Kromann;
Ricciardi, Federico;
Sharma, Manuj;
Thomsen, Reimar W;
Baio, Gianluca;
Pedersen, Lars

Publication type:

Article

Differences in Psychotropic Drug Prescribing Between Ethnic Groups of People with Dementia in the United Kingdom.

Published in:

Clinical Epidemiology, 2020, v. 12, p. 61, doi. 10.2147/CLEP.S222126

By:

Jones, Mary Elizabeth;
Petersen, Irene;
Walters, Kate;
Bhanu, Cini;
Manthorpe, Jill;
Raine, Rosalind;
Mukadam, Naaheed;
Cooper, Claudia

Publication type:

Article

Ethnic Differences in the Prevalence of Type 2 Diabetes Diagnoses in the UK: Cross-Sectional Analysis of the Health Improvement Network Primary Care Database.

Published in:

Clinical Epidemiology, 2019, v. 11, p. 1081, doi. 10.2147/CLEP.S227621

By:

Pham, Tra My;
Carpenter, James R;
Morris, Tim P;
Sharma, Manuj;
Petersen, Irene

Publication type:

Article

Health indicator recording in UK primary care electronic health records: key implications for handling missing data.

Published in:

Clinical Epidemiology, 2019, v. 11, p. 157, doi. 10.2147/CLEP.S191437

By:

Petersen, Irene;
Welch, Catherine A;
Nazareth, Irwin;
Walters, Kate;
Marston, Louise;
Morris, Richard W;
Carpenter, James R;
Morris, Tim P;
Pham, Tra My

Publication type:

Article

Trends in dementia diagnosis rates in UK ethnic groups: analysis of UK primary care data.

Published in:

Clinical Epidemiology, 2018, v. 10, p. 949, doi. 10.2147/CLEP.S152647

By:

Pham, Tra My;
Petersen, Irene;
Walters, Kate;
Raine, Rosalind;
Manthorpe, Jill;
Mukadam, Naaheed;
Cooper, Claudia

Publication type:

Article

Selective serotonin reuptake inhibitor use and mortality, postoperative complications, and quality of care in hip fracture patients: a Danish nationwide cohort study.

Published in:

Clinical Epidemiology, 2018, v. 10, p. 1053, doi. 10.2147/CLEP.S166309

By:

Bruun, Stine Bakkensen;
Petersen, Irene;
Kristensen, Nickolaj Risbo;
Cronin-Fenton, Deirdre;
Pedersen, Alma Becic

Publication type:

Article

The impact of different strategies to handle missing data on both precision and bias in a drug safety study: a multidatabase multinational population-based cohort study.

Published in:

Clinical Epidemiology, 2018, v. 10, p. 643, doi. 10.2147/CLEP.S154914

By:

Martín-Merino, Elisa;
Calderón-Larrañaga, Amaia;
Hawley, Samuel;
Poblador-Plou, Beatriz;
Llorente-García, Ana;
Petersen, Irene;
Prieto-Alhambra, Daniel

Publication type:

Article

Prescription duration and treatment episodes in oral glucocorticoid users: application of the parametric waiting time distribution.

Published in:

Clinical Epidemiology, 2017, v. 9, p. 591, doi. 10.2147/CLEP.S148671

By:

Laugesen, Kristina;
Støvring, Henrik;
Hallas, Jesper;
Pottegård, Anton;
Jørgensen, Jens Otto Lunde;
Sørensen, Henrik Toft;
Petersen, Irene

Publication type:

Article

Missing data and multiple imputation in clinical epidemiological research.

Published in:

Clinical Epidemiology, 2017, v. 9, p. 157, doi. 10.2147/CLEP.S129785

By:

Pedersen, Alma B.;
Mikkelsen, Ellen M.;
Cronin-Fenton, Deirdre;
Kristensen, Nickolaj R.;
Tra My Pham;
Pedersen, Lars;
Petersen, Irene

Publication type:

Article

Antiepileptic drugs prescribed in pregnancy and prevalence of major congenital malformations: comparative prevalence studies.

Published in:

Clinical Epidemiology, 2017, v. 9, p. 95, doi. 10.2147/CLEP.S118336

By:

Petersen, Irene;
Shuk-Li Collings;
McCrea, Rachel L.;
Nazareth, Irwin;
Osborn, David P.;
Cowen, Phil J.;
Sammon, Cormac J.

Publication type:

Article

The RECORD reporting guidelines: meeting the methodological and ethical demands of transparency in research using routinely-collected health data.

Published in:

Clinical Epidemiology, 2016, v. 8, p. 389, doi. 10.2147/CLEP.S110528

By:

Nicholls, Stuart G.;
Langan, Sinead M.;
Toft Sørensen, Henrik;
Petersen, Irene;
Benchimol, Eric I.

Publication type:

Article

An algorithm for identification and classification of individuals with type 1 and type 2 diabetes mellitus in a large primary care database.

Published in:

Clinical Epidemiology, 2016, v. 8, p. 373, doi. 10.2147/CLEP.S113415

By:

Sharma, Manuj;
Petersen, Irene;
Nazareth, Irwin;
Coton, Sonia J.

Publication type:

Article

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.

Published in:

Clinical Epidemiology, 2016, v. 8, p. 123, doi. 10.2147/CLEP.S104258

By:

O'Keeffe, Aidan G.;
Nazareth, Irwin;
Petersen, Irene

Publication type:

Article

Helping everyone do better: a call for validation studies of routinely recorded health data.

Published in:

Clinical Epidemiology, 2016, v. 8, p. 49, doi. 10.2147/CLEP.S104448

By:

Ehrenstein, Vera;
Petersen, Irene;
Smeeth, Liam;
Jick, Susan S.;
Benchimol, Eric I.;
Ludvigsson, Jonas F.;
Sørensen, Henrik Toft

Publication type:

Article

Setting the RECORD straight: developing a guideline for the REporting of studies Conducted using Observational Routinely collected Data.

Published in:

2013

By:

Langan, Sinéad M.;
Benchimol, Eric I.;
Guttmann, Astrid;
Moher, David;
Petersen, Irene;
Smeeth, Liam;
Sørensen, Henrik Toft;
Stanley, Fiona;
Von Elm, Erik

Publication type:

Editorial

Cigarette smoking as a risk factor for schizophrenia or all non-affective psychoses.

Published in:

Psychological Medicine, 2021, v. 51, n. 8, p. 1373, doi. 10.1017/S0033291720000136

By:

King, Michael;
Jones, Rebecca;
Petersen, Irene;
Hamilton, Fiona;
Nazareth, Irwin

Publication type:

Article

Hospital Records of Pain, Fatigue, or Circulatory Symptoms in Girls Exposed to Human Papillomavirus Vaccination: Cohort, Self-Controlled Case Series, and Population Time Trend Studies.

Published in:

American Journal of Epidemiology, 2020, v. 189, n. 4, p. 277, doi. 10.1093/aje/kwz284

By:

Thomsen, Reimar Wernich;
Öztürk, Buket;
Pedersen, Lars;
Nicolaisen, Sia Kromann;
Petersen, Irene;
Olsen, Jørn;
Sørensen, Henrik Toft

Publication type:

Article

Incident Type 2 Diabetes and Risk of Fracture: A Comparative Cohort Analysis Using U.K. Primary Care Records.

Published in:

2021

By:

Davie, Gabrielle S.;
Pal, Kingshuk;
Orton, Elizabeth;
Tyrrell, Edward G.;
Petersen, Irene

Publication type:

journal article

Common Infections in Patients Prescribed Systemic Glucocorticoids in Primary Care: A Population-Based Cohort Study.

Published in:

2016

By:

Fardet, Laurence;
Petersen, Irene;
Nazareth, Irwin

Publication type:

journal article

The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement.

Published in:

2015

By:

Benchimol, Eric I.;
Smeeth, Liam;
Guttmann, Astrid;
Harron, Katie;
Moher, David;
Petersen, Irene;
Sørensen, Henrik T.;
von Elm, Erik;
Langan, Sinéad M.;
null, null;
RECORD Working Committee

Publication type:

journal article

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.

Published in:

PLoS Medicine, 2013, v. 10, n. 8, p. 1, doi. 10.1371/journal.pmed.1001505

By:

Grant, Robert L.;
Drennan, Vari M.;
Rait, Greta;
Petersen, Irene;
Iliffe, Steve

Publication type:

Article

Backdating of events in electronic primary health care data: should one censor at the date of last data collection.

Published in:

Pharmacoepidemiology & Drug Safety, 2016, v. 25, n. 4, p. 378, doi. 10.1002/pds.3981

By:

Sammon, Cormac J.;
Petersen, Irene

Publication type:

Article

Identifying periods of acceptable computer usage in primary care research databases.

Published in:

Pharmacoepidemiology & Drug Safety, 2013, v. 22, n. 1, p. 64, doi. 10.1002/pds.3368

By:

Horsfall, Laura;
Walters, Kate;
Petersen, Irene

Publication type:

Article

National changes in oral antipsychotic treatment for people with schizophrenia in primary care between 1998 and 2007 in the United Kingdom.

Published in:

Pharmacoepidemiology & Drug Safety, 2012, v. 21, n. 2, p. 161, doi. 10.1002/pds.2213

By:

Prah, Philip;
Petersen, Irene;
Nazareth, Irwin;
Walters, Kate;
Osborn, David

Publication type:

Article

Issues in multiple imputation of missing data for large general practice clinical databases.

Published in:

Pharmacoepidemiology & Drug Safety, 2010, v. 19, n. 6, p. 618, doi. 10.1002/pds.1934

By:

Marston, Louise;
Carpenter, James R.;
Walters, Kate R.;
Morris, Richard W.;
Nazareth, Irwin;
Petersen, Irene

Publication type:

Article

Creating medical and drug code lists to identify cases in primary care databases.

Published in:

Pharmacoepidemiology & Drug Safety, 2009, v. 18, n. 8, p. 704, doi. 10.1002/pds.1770

By:

Davé, Shreya;
Petersen, Irene

Publication type:

Article

Trends in incidence of recorded diagnosis of osteoporosis, osteopenia, and fragility fractures in people aged 50 years and above: retrospective cohort study using UK primary care data.

Published in:

Osteoporosis International, 2023, v. 34, n. 8, p. 1411, doi. 10.1007/s00198-023-06739-1

By:

Avgerinou, Christina;
Petersen, Irene;
Clegg, Andrew;
West, Robert M.;
Osborn, David;
Walters, Kate

Publication type:

Article

In utero or early-in-life exposure to antibiotics and the risk of childhood atopic dermatitis, a population-based cohort study.

Published in:

British Journal of Dermatology, 2024, v. 191, n. 1, p. 58, doi. 10.1093/bjd/ljad428

By:

Fuxench, Zelma Chiesa;
Mitra, Nandita;
Pozo, Domenica Del;
Hoffstad, Ole;
Shin, Daniel B;
Langan, Sinéad M;
Petersen, Irene;
Bhate, Ketaki;
Margolis, David J

Publication type:

Article

Application of multiple imputation using the two-fold fully conditional specification algorithm in longitudinal clinical data.

Published in:

Stata Journal, 2014, v. 14, n. 2, p. 418, doi. 10.1177/1536867x1401400213

By:

Welch, Catherine;
Bartlett, Jonathan;
Petersen, Irene

Publication type:

Article

Population-calibrated multiple imputation for a binary/categorical covariate in categorical regression models.

Published in:

2019

By:

Pham, Tra My;
Carpenter, James R;
Morris, Tim P;
Wood, Angela M;
Petersen, Irene

Publication type:

journal article

Drug‐induced orthostatic hypotension: Cluster analysis of co‐prescription patterns in older people in UK primary care.

Published in:

Pharmacoepidemiology & Drug Safety, 2024, v. 33, n. 1, p. 1, doi. 10.1002/pds.5730

By:

Bhanu, Cini;
Petersen, Irene;
Orlu, Mine;
Davis, Daniel;
Sofat, Reecha;
Bazo‐Alvarez, Juan Carlos;
Walters, Kate

Publication type:

Article

Initiation of antidepressant medication in people with type 2 diabetes living in the United Kingdom—A retrospective cohort study.

Published in:

Pharmacoepidemiology & Drug Safety, 2022, v. 31, n. 8, p. 892, doi. 10.1002/pds.5484

By:

Pal, Kingshuk;
Sharma, Manuj;
Mukadam, Naaheed M.;
Petersen, Irene

Publication type:

Article

Antidepressant use during pregnancy and risk of congenital heart defects: A case‐time‐control study.

Published in:

Pharmacoepidemiology & Drug Safety, 2019, v. 28, n. 9, p. 1180, doi. 10.1002/pds.4844

By:

Sun, Yuelian;
Pedersen, Lars Henning;
Wu, Chun Sen;
Petersen, Irene;
Sørensen, Henrik Toft;
Olsen, Jørn

Publication type:

Article

UK research data resources based on primary care electronic health records: review and summary for potential users.

Published in:

BJGP Open, 2023, v. 7, n. 3, p. 1, doi. 10.3399/BJGPO.2023.0057

By:

Edwards, Lara;
Pickett, James;
Ashcroft, Darren M.;
Dambha-Miller, Hajira;
Majeed, Azeem;
Mallen, Christian;
Petersen, Irene;
Qureshi, Nadeem;
van Staa, Tjeerd;
Abel, Gary;
Carvalho, Chris;
Denholm, Rachel;
Kontopantelis, Evangelos;
Macaulay, Ayoyemi;
Macleod, John

Publication type:

Article

Physical health monitoring in dementia and associations with ethnicity: a descriptive study using electronic health records.

Published in:

BJGP Open, 2020, v. 4, n. 4, p. 1, doi. 10.3399/bjgpopen20X101080

By:

Bhanu, Cini;
Jones, Mary Elizabeth;
Walters, Kate;
Petersen, Irene;
Manthorpe, Jill;
Raine, Rosalind;
Mukadam, Naaheed;
Cooper, Claudia

Publication type:

Article

Ethnicity data resource in population-wide health records: completeness, coverage and granularity of diversity.

Published in:

Scientific Data, 2024, v. 11, n. 1, p. 1, doi. 10.1038/s41597-024-02958-1

By:

Pineda-Moncusí, Marta;
Allery, Freya;
Delmestri, Antonella;
Bolton, Thomas;
Nolan, John;
Thygesen, Johan H.;
Handy, Alex;
Banerjee, Amitava;
Denaxas, Spiros;
Tomlinson, Christopher;
Denniston, Alastair K.;
Sudlow, Cathie;
Akbari, Ashley;
Wood, Angela;
Collins, Gary S.;
Petersen, Irene;
Coates, Laura C.;
Khunti, Kamlesh;
Prieto-sAlhambra, Daniel;
Khalid, Sara

Publication type:

Article

Understanding the impact of non-shared unmeasured confounding on the sibling comparison analysis.

Published in:

International Journal of Epidemiology, 2024, v. 53, n. 1, p. 1, doi. 10.1093/ije/dyad179

By:

Esen, Buket Öztürk;
Ehrenstein, Vera;
Petersen, Irene;
Sørensen, Henrik Toft;
Pedersen, Lars

Publication type:

Article

Death following partner bereavement: A self-controlled case series analysis.

Published in:

PLoS ONE, 2017, v. 12, n. 3, p. 1, doi. 10.1371/journal.pone.0173870

By:

King, Michael;
Lodwick, Rebecca;
Jones, Rebecca;
Whitaker, Heather;
Petersen, Irene

Publication type:

Article