Silvia Moler Zapata


Research Degree Student

15-17 Tavistock Place
United Kingdom

I am a PhD student at the Health Services Research and Policy Department at LSHTM. My research project seeks to harness recent developments in the fields of causal inference and machine learning and the advent of large observational datasets to estimate treatment effectiveness and cost-effectiveness of health technologies. 

I hold an MSc in Health Economics from the University of York. I am interested in quantitative methods for economic evaluations of health technologies.

I am funded by a NIHR ARC North Thames PhD studentship.


Faculty of Public Health and Policy
Department of Health Services Research and Policy


Centre for Statistical Methodology


Research Area
Clinical databases
Economic evaluation
Health services research
Health technology assessment
Statistical methods
Electronic health records
Health economics
United Kingdom

Selected Publications

Impact of the first wave of COVID-19 on outcomes following emergency admissions for common acute surgical conditions: analysis of a national database in England.
Hutchings A; Moonesinghe R; Moler Zapata S; Cromwell D; Bellingan G; Vohra R; Moug S; Smart N; Hinchliffe R; Grieve R
British Journal of Surgery
Effectiveness of emergency surgery for five common acute conditions: an instrumental variable analysis of a national routine database.
Hutchings A; O'Neill S; Lugo-Palacios D; Moler Zapata S; Silverwood R; Cromwell D; Keele L; Bellingan G; Moonesinghe SR; Smart N
Local Instrumental Variable Methods to Address Confounding and Heterogeneity when Using Electronic Health Records: An Application to Emergency Surgery.
Moler-Zapata S; Grieve R; Lugo-Palacios D; Hutchings A; Silverwood R; Keele L; Kircheis T; Cromwell D; Smart N; Hinchliffe R
Medical decision making
Estimating the Health Effects of Expansions in Health Expenditure in Indonesia: A Dynamic Panel Data Approach.
Moler-Zapata S; Kreif N; Ochalek J; Mirelman AJ; Nadjib M; Suhrcke M
Applied health economics and health policy
Variation in the rates of emergency surgery amongst emergency admissions to hospital for common acute conditions.
Hutchings A; Moler Zapata S; O'Neill S; Smart N; Cromwell D; Hinchliffe R; Grieve R
BJS open
Antibiotics as first-line alternative to appendicectomy in adult appendicitis: 90-day follow-up from a prospective, multicentre cohort study.
Javanmard-Emamghissi H; Hollyman M; Boyd-Carson H; Doleman B; Adiamah A; Lund JN; Moler-Zapata S; Grieve R; Moug SJ; Tierney GM
The British journal of surgery
Evaluating the clinical and cost-effectiveness of permissive hypotension in critically ill patients aged 65 years or over with vasodilatory hypotension: Statistical and Health Economic Analysis Plan for the 65 trial
Thomas K; Patel A; Sadique MZ; Grieve RD; Mason AJ; Moler S; Gordon AC; Rowan KM; Mouncey PR; Lamontagne F
Journal of the Intensive Care Society
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