Jen Lewis

Population Health, School of Medicine and Population Health

Research Fellow

Medical Statistician

jen.lewis@sheffield.ac.uk
+44 114 222 0839

3018, Regent Court (ScHARR)

Full contact details

Jen Lewis
Population Health, School of Medicine and Population Health
3018
Regent Court (ScHARR)
30 Regent Street
Sheffield
S1 4DA

Profile: I first joined the Division of Population Health (previously ScHARR) in 2016 after developing an interest in health research methods. Prior to that I completed my PhD in Computational Neuroscience in the Department of Psychology here at UoS. This was funded by the EPSRC and focused on understanding the brain systems and mechanisms involved in human routine action.

Qualifications

BSc Psychology (Hons), MSc Cognitive & Computational Neuroscience
PhD Computational Neuroscience

Research interests

I am interested in how novel statistical and computational methodologies can help us to exploit routinely collected healthcare data to drive improvements in patient care, particularly in urgent and emergency care and in situations where standard clinical trials may not be possible or feasible. I am also interested in understanding the causal pathways underlying inequalities of access to and provision of healthcare.

Current projects

NIHR ARC Yorkshire and Humber Urgent and Emergency Care Theme
Reducing Avoidable Admissions in Acute Hospital Care: The role and impact of Same Day Emergency Care Services
Mixed methods study to understand the scale, impact and care trajectory for patients who have long life after a fall
Integrating genomic and spatial approaches for targeted control of HIV-associated tuberculosis epidemics

Publications

Journal articles

Lewis J, Stone T, Simpson R, Jacques R, O'Keeffe C, Croft S & Mason S (2024) Erratum: Correction: Patient compliance with NHS 111 advice: Analysis of adult call and ED attendance data 2013-2017 (PloS one (2021) 16 5 DOI: 10.1371/journal.pone.0251362). PloS one, 19(7), e0307203.
Mason S, Lewis J & Wren J (2024) Tackling the burden of chronic ill health in emergency medicine. Canadian Journal of Emergency Medicine, 26(6), 369-370.
Garner A, Lewis J, Dixon S, Preston N, Caiado CCS, Hanratty B, Jones M, Knight J & Mason SM (2024) The impact of digital technology in care homes on unplanned secondary care usage and associated costs. Age and Ageing, 53(2). View this article in WRRO
Debono M, Caunt S, Elder C, Fearnside J, Lewis J, Keevil B, Dixon S & Ross R (2023) Real world evidence supports waking salivary cortisone as a screening test for adrenal insufficiency. Clinical Endocrinology. View this article in WRRO
Lewis J, Weich S, O’Keeffe C, Stone T, Hulin J, Bell N, Doyle M, Lucock M & Mason S (2023) Use of urgent, emergency and acute care by mental health service users: a record-level cohort study. PLoS ONE, 18(2).
Chatha H, Sampson F, Croft S, Lewis J, Watson M, Robertson A, Tonkins M & Prager G (2023) Journal update monthly top five. Emergency Medicine Journal, 40(3), 235-236. View this article in WRRO
Lewis J & Burton C (2023) Understanding the consequences of GP referral thresholds: taking the instrumental approach. BMJ Quality & Safety.
Debono M, Elder CJ, Lewis J, Fearnside J, Caunt S, Dixon S, Jacques RM, Newell-Price J, Whitaker MJ, Keevil B & Ross RJ (2023) Home waking salivary cortisone to screen for adrenal insufficiency. NEJM Evidence, 2(2). View this article in WRRO
Han O, Tan HW, Julious S, Sutton L, Jacques R, Lee E, Lewis J & Walters S (2022) A descriptive study of samples sizes used in agreement studies published in the PubMed repository. BMC Medical Research Methodology, 22(1). View this article in WRRO
Mason S, Stone T, Jacques R, Lewis J, Simpson R, Kuczawski M & Franklin M (2022) Creating a real-world linked research platform for analyzing the urgent and emergency care system. Medical Decision Making, 42(8), 999-1009. View this article in WRRO
Totton N, Bradburn M, Hoo ZH, Lewis J, Hind D, Girling C, Shepherd E, Nightingale J, Daniels T, Dewar J , Dawson S et al (2021) Prospectively predicting Pseudomonas aeruginosa infection/s using routine data from the UK cystic fibrosis register. Health Science Reports, 4(4). View this article in WRRO
Lewis J & Julious SA (2021) Sample sizes for cluster-randomised trials with continuous outcomes: Accounting for uncertainty in a single intra-cluster correlation estimate. Statistical Methods in Medical Research, 30(11), 2459-2470.
Hoo ZH, Totton N, Waterhouse S, Lewis J, Girling C, Bradburn M, Arden MA, Whelan P, Ainsworth J, Dawson S , Millward S et al (2021) Real-world adherence among adults with cystic fibrosis is low – a retrospective analysis of the CFHealthHub digital learning health system. Chest, 160(6), 2061-2065. View this article in WRRO
Burton C, Stone T, Oliver P, Dickson JM, Lewis J & Mason SM (2021) Frequent attendance at the emergency department shows typical features of complex systems : analysis of multicentre linked data. Emergency Medicine Journal, 39(1), 3-9. View this article in WRRO
Lewis J, Stone T, Simpson R, Jacques R, O’Keeffe C, Croft S & Mason S (2021) Patient compliance with NHS 111 advice: Analysis of adult call and ED attendance data 2013–2017. PLoS ONE, 16(5). View this article in WRRO
Khan KS, Reed-Embleton H, Lewis J, Saldanha J & Mahmud S (2021) Does nosocomial SARS-CoV-2 infection result in increased 30-day mortality? A multi-centre observational study to identify risk factors for worse outcomes in COVID-19 disease. Journal of Hospital Infection, 107, 91-94.
Khan KS, Reed-Embleton H, Lewis J, Bain P & Mahmud S (2020) Angiotensin converting enzyme inhibitors do not increase the risk of poor outcomes in COVID-19 disease. A multi-centre observational study. Scottish Medical Journal, 65(4), 149-153.
Rogers TK, Boon M, Bowen D, Brummel SP, Tod AM & Lewis J (2019) Telephone follow-up to identify incident lung cancer symptoms in COPD patients. British Journal of Cancer Research, 2(4), 308-313. View this article in WRRO
Thirkettle M, Lewis J, Langdridge D & Pike G (2018) A mobile app delivering a gamified battery of cognitive tests designed for repeated play (OU Brainwave): app design and cohort study. JMIR Serious Games, 6(4). View this article in WRRO

Chapters

Redgrave P, Gurney K, Stafford T, Thirkettle M & Lewis J (2013) The Role of the Basal Ganglia in Discovering Novel Actions, Intrinsically Motivated Learning in Natural and Artificial Systems (pp. 129-150). Springer Berlin Heidelberg

Conference proceedings papers

Lewis J & Scharr SJ (2019) Sample size of four clusters-per-arm as a rule of thumb for pilot cluster-randomised controlled trials. Trials, Vol. 20(Suppl_1). Brighton, UK, 6 October 2019 - 6 October 2019. View this article in WRRO
Lewis JM, Chambers JM, Redgrave P & Gurney K (2011) A computational model of interconnected basal ganglia-thalamocortical loops for goal directed action sequences. BMC Neuroscience, Vol. 12(S1)

Preprints

Pilbery R, Lewis J & Simpson R (2024) EXploring the journeys of Patients who End their Calls prior to Triage by NHS111: The EXPECT study, Cold Spring Harbor Laboratory.
Chitwood MH, Corbett EL, Ndhlovu V, Sobkowiak B, Colijn C, Andrews JR, Burke RM, Cudahy PGT, Dodd PJ, Imai-Eaton JW , Engelthaler DM et al (2024) Distribution and transmission ofM. tuberculosisin a high-HIV prevalence city in Malawi: a genomic and spatial analysis, Cold Spring Harbor Laboratory.
Garner A, Lewis J, Dixon S, Preston NJ, Caiado CCCS, Hanratty B, Jones M, Knight J & Mason SM (2023) The Impact of Digital Technology in Care Homes on Unplanned Secondary Care Usage and Associated Costs, Cold Spring Harbor Laboratory.
Han O, Tan HW, Julious S, Sutton L, Jacques R, Lee E, Lewis J & Walters S (2022) Review of samples sizes used in agreement studies published in the PubMed database, Research Square Platform LLC.
Burton C, Stone T, Oliver P, Dickson JM, Lewis J & Mason S (2020) High use of the emergency department shows typical features of complex systems: analysis of multicentre linked data, Cold Spring Harbor Laboratory.
Thirkettle M, Lewis J, Langdridge D & Pike G (2018) A Mobile App Delivering a Gamified Battery of Cognitive Tests Designed for Repeated Play (OU Brainwave): App Design and Cohort Study (Preprint), JMIR Publications Inc..

Research group

Sam Watchorn
Qiang Zhang
Jo Sutton-Klein

Teaching interests

Tutor for undergraduate and postgraduate modules:

HAR31001: Applied Statistics for Medical and Health Researchers
HAR6045: Further Statistics for Health Science Researchers
HAR6116: Randomised Controlled Trials to Support Reimbursement Decision-Making
HAR6030: Introduction to Research Methods
MBChB Critical Numbers
MBChB Study Design and Critical Appraisal

Dissertation supervisor for:

HAR679: Dissertation for Masters in Public Health
HAR61003: Dissertation for MSc in Statistics with Medical Applications"

Professional activities and memberships: I am the Early Careers Representative for the Design, Trials and Statistics section of Population Health, and I am a member of the NIHR Statistics Group career development committee.