Dr Lauren Bell joined King's College London in January 2025. Prior to this, Dr Bell enjoyed working as a statistician at both Australian and British academic institutions, including the University of Melbourne, Queen Mary, University of London and the University of Cambridge.

In 2022, Dr Bell completed her PhD within the Department of Biostatistics at the London School of Hygiene and Tropical Medicine, under the supervision of Professor Elizabeth Williamson (LSHTM) and Professor Henry Potts (UCL). Dr Bell's PhD made important contributions to the field of behavioural engagement with digital interventions and the development of just-in-time adaptive interventions through the design and analysis of micro-randomised trials.

Her broad methodological interests include causal inference in experimental design and the development of complex and dynamic digital interventions for mental health. She is committed to providing robust, comprehensive statistical support to her collaborators, to ensure rigorous outcomes and clear findings for their research questions.

Research interests

• Causal Inference in Experimental Design
• Assessing the Impact of Gamification in Digital Health through estimating Network Effects/Interference
• Digital Health Interventions for Mental Health and Chronic Conditions 

Key publications

• Liu X, Qian T, Bell L, Chakraborty B. Incorporating nonparametric methods for estimating causal excursion effects in mobile health with zero-inflated count outcomes. Biometrics 2024;80(2)
• Bao Y, Bell L, Williamson E, Garnett C, Qian T. Estimating causal effects for binary outcomes using per-decision inverse probability weighting. Biostatistics 2024
• Bell L, Garnett C, Bao Y, Cheng Z, Qian T, Perski O, Potts H, Williamson E. How Notifications Affect Engagement With a Behavior Change App: Results From a Micro-Randomized Trial. JMIR mHealth and uHealth 2023;11:e38342
• Bell L, Garnett C, Qian T, Perski O, Williamson E, Potts H. Engagement With a Behavior Change App for Alcohol Reduction: Data Visualization for Longitudinal Observational Study. Journal of Medical Internet Research 2020;22(12):e23369
• Bell L, Garnett C, Qian T, Perski O, Potts H, Williamson E. Notifications to Improve Engagement With an Alcohol Reduction App: Protocol for a Micro-Randomized Trial. JMIR Res Protoc 2020;9(8):e18690