Profile photo Vjola Hoxhaj

Vjola Hoxhaj

Assistant Professor

Biography

Born in Albania, Vjola Hoxhaj is a clinical epidemiologist and statistical programmer at the Julius Center for Health Sciences and Primary Care, UMC Utrecht, where she is pursuing her PhD. Her work focuses on real-world data (RWD) and the methods used to assess and strengthen its quality for medicine and vaccine safety research. She is particularly interested in whether data from different healthcare systems and databases is accurate, complete, and comparable enough to be trusted for public-health and regulatory decisions.

She currently works on vaccine Post-Authorization Safety Studies (PASS), which monitor the real-world safety of vaccines once they are in routine use, helping to detect or confirm risks that pre-authorization clinical trials are not designed to pick up. She is the lead author of INSIGHT, a tool for fit-for-purpose evaluation and quality assessment of observational data sources, and has developed the accompanying R-based data-quality pipelines used across the VAC4EU network and related EMA-tendered studies. Her work combines epidemiological research, statistical programming in R, and regulatory and scientific writing.

Recent publications

CodeMergeR Vjola Hoxhaj, Judit Riera-Arnau, Sima Mohammadi, Miriam C J M Sturkenboom, Constanza L Andaur Navarro
Pharmacoepidemiology and Drug Safety, 2026, vol. 35
Identifying Pregnancies in Population-Based Data Sources Giorgio Limoncella, Anna Girardi, Claudia Bartolini, Giulia Hyeraci, Giuseppe Roberto, Olga Paoletti, Davide Messina, Felipe Villalobos, Carlo Alberto Bisacco, Jesse van den Berg, Eline Houben, Katia Santacà, Ylenia Ingrasciotta, Gianluca Trifirò, Giorgia Pellegrini, Valentina Ientile, Vjola Hoxhaj, Carlos Durán, Judit Riera-Arnau, Patricia García-Poza, Mar Martín-Pérez, Ana Llorente-García, Lucia Cea-Soriano, Consuelo Huerta-Álvarez, Francisco Sánchez-Sáez, Gabriel Sanfélix-Gimeno, Clara L Rodríguez-Bernal, Jérémy Jové, Marie-Agnès Bernard, Nicolas H Thurin, Sue Jordan, Daniel Thayer, Hywel Turner Evans, Alex-Ioan Coldea, Marco Manfrini, Marleen van Gelder, Michele Tari, Romin Pajouheshnia, Ana Sofia Afonso Maciel, Maryline Le Noan-Lainé, Ditte Mølgaard-Nielsen, Marianne Cunnington, Caitlin Dodd, Leonardo Grilli, Constanza L Andaur Navarro, Miriam Sturkenboom, Hedvig Nordeng, Rosa Gini
Pharmacoepidemiology and Drug Safety, 2026, vol. 35
Identification of gestational diabetes mellitus in European electronic healthcare databases Ditte Mølgaard-Nielsen, Vera Mitter, Angela Lupattelli, Vjola Hoxhaj, Constanza L. Andaur Navarro, Saeed Hayati, Sandra Lopez-Leon, Joan K. Morris, Anja Geldof, Susan Jordan, Maarit K. Leinonen, Visa Martikainen, Marco Manfrini, Luca Cammarota, Amanda Neville, Laia Barrachina-Bonet, Clara Cavero-Carbonell, Laura García-Villodre, Anthony Caillet, Marie Beslay, Christine Damase-Michel, Marleen M.H.J. van Gelder, Hedvig Nordeng
BMJ Open, 2025, vol. 15
Insight Vjola Hoxhaj, Constanza L Andaur Navarro, Judit Riera-Arnau, Roel J H J Elbers, Ema Alsina, Caitlin Dodd, Miriam C J M Sturkenboom
Pharmacoepidemiology and Drug Safety, 2025, vol. 34
Real-World Evidence BRIDGE Albert Cid Royo, Roel Elbers Jhj, Daniel Weibel, Vjola Hoxhaj, Zeynep Kurkcuoglu, Miriam C J Sturkenboom, Tiago A Vaz, Constanza L Andaur Navarro
Pharmacoepidemiology and Drug Safety, 2024, vol. 33
Impact of the 2018 revised Pregnancy Prevention Programme by the European Medicines Agency on the use of oral retinoids in females of childbearing age in Denmark, Italy, Netherlands, and Spain Carlos E Durán, Judit Riera-Arnau, Shahab Abtahi, Romin Pajouheshnia, Vjola Hoxhaj, Magdalena Gamba, Ema Alsina, Mar Martin-Perez, Patricia Garcia-Poza, Ana Llorente-Garcia, Diana Gonzalez-Bermejo, Luisa Ibánez, Mònica Sabaté, Xavier Vidal, Elena Ballarín, Gabriel Sanfélix-Gimeno, Clara Rodríguez-Bernal, Salvador Peiró, Aníbal García-Sempere, Francisco Sanchez-Saez, Valentina Ientile, Ylenia Ingrasciotta, Claudio Guarneri, Matilde Tanaglia, Michele Tari, Ron Herings, Eline Houben, Karin Swart-Polinder, Emily Holthuis, Consuelo Huerta, Rosa Gini, Giuseppe Roberto, Claudia Bartolini, Olga Paoletti, Giorgio Limoncella, Anna Girardi, Giulia Hyeraci, Morten Andersen, Sarah Brøgger Kristiansen, Christine Erikstrup Hallgreen, Olaf Klungel, Miriam Sturkenboom
Frontiers in Pharmacology, 2023, vol. 14, p.1-12