Anna Heath
Anna HeathScientist
Anna is a Scientist at The Hospital for Sick Children (SickKids), Toronto, an Assistant Professor at University of Toronto and Honorary Research Fellow at University College London, UK. She is the Canada Research Chair in Statistical Trial Design. She holds a degree in Mathematics with French language from the University of Sheffield, UK and a PhD in Statistical Science from University College London. She moved to Toronto in 2018 to lead the development of innovative statistical methodology for four clinical trials for novel treatments in the paediatric emergency department. In 2020, she started as a Scientist at SickKids and founded the IMPaCT lab. Her research now focuses on developing novel statistical methodology, software, expertise and guidance to improve the efficiency and design of clinical trials, particularly in paediatrics. This research combines many areas including biostatistics, evidence synthesis, meta-analysis, Bayesian methods, decision theory, health economic modelling and simulation based methods. Outside of work, she is a very keen ballroom dancer, a musician and a cricket-lover.
Annisa Siu
Annisa SiuClinical Research Project Assistant
Annisa has attained her Bachelor of Health Sciences (Honours) at McMaster University. Her research interests are primarily concerned with improving the quality of care for vulnerable populations, particularly children and adolescents who face urban health disparities. Annisa also has ample experience working within trauma-informed frameworks as a Women’s Support Worker, a youth mentor, and a knowledge translation coordinator. Outside of these efforts, Annisa is also a graphic designer and art instructor at a local Toronto studio.
Reyhaneh Hosseini
Reyhaneh HosseiniResearch Fellow
I am currently a Research Fellow in the Child Health and Evaluative Sciences Program at The Hospital for Sick Children (SickKids). I completed my PhD in Statistics at University of Ottawa (2019) where I worked as a Teacher assistant, Research Assistant and Part-time Professor. I have also worked as Statistician and Data Analyst in various departments at Government of Canada.
My research and expertise lies at data science, theoretical statistics, statistical modelling, Bayesian statistics and Bayesian bootstrapping. I am the recipient of several awards and scholarships such as Queen Elizabeth II Graduate Scholarship and Excellence Scholarship.
Nam Anh Tran
Nam Anh TranBiostatistical Analyst
Nam-Anh attained both Bachelor and Master’s degree in Statistics at University of Manitoba. He has worked as a biostatistical analyst in the IMPaCT lab since 11/2021. He mainly focuses on employing Bayesian statistics and VoI methods to improve the design of clinical trials. Besides, he used to work on systematic reviews and indirect comparisons, such as Meta-analysis, STC’s and MAIC’s. During his spare time, he enjoys cooking Asian foods, writing and reading books about astrology and the supernatural.
Linke Li
Linke LiGrad Student PhD
Linke is a PhD student in Biostatistics at the University of Toronto. He completed a bachelor of computing degree and master of science degree in statistics at Queen’s University. He joined the lab in 2020 and is currently working on developing methods for adaptive trial design. Outside of research, he is a big fan of anime and detective novels.
Chengyang Gao
Chengyang GaoPhD Student
I am Chengyang Gao, originally from China. I obtained a BSc in Statistics, Economics and Finance at UCL and a Master’s degree in Health economics from the department of health policy at the LSE. I am currently back at UCL completing a doctoral degree in Statistical Science. My current research interest focuses on applying Bayesian and survey inference methods to study the generalisability of cost-effectiveness analysis. Outside of research, I enjoy long walk in the city.
Navpreet Kaur
Navpreet KaurResearch Operations Administrative Assistant
Navpreet joined IMPaCT Lab in June 2020. She holds a Bachelors of Business Administration degree. Her professional background is in administrative operations, having worked in different countries. She currently provides administrative assistance to three principal investigators and their labs at The Hospital for Sick Children (SickKids). During her spare time, she enjoys painting and reading.

Previous Lab Members

Phebe Lan
Phebe LanClinical Research Project Assistant
Phebe joined IMPaCT Lab at The Hospital for Sick Children (SickKids) as a clinical research project assistant in 2020. Her work is mainly focusing on applying elicitation methods, developing statistical analysis plans, and improving Bayesian statistical analysis in paediatric clinical trial design. She holds a Master of Science in Biostatistics from University of Toronto and an Honours Bachelor of Science in Statistics from Queen’s University. During her graduate studies, she worked at Princess Margaret Cancer Research Centre, where she applied functional data analysis and performing predictive modelling using R. Her research interests include Bayesian analysis, survival analysis, and R programming.
Antonio Remiro Azocar
Antonio Remiro AzocarPhD Student
Antonio is currently completing a doctoral degree in Statistical Science at University College London. His research interests are primarily concerned with the development and application of statistical methods to compare treatments in the absence of head-to-head clinical trials. Originally from Spain, Antonio has a B.Sc. in Mathematics and Physics and an M.Sc. in Machine Learning. Antonio has ample experience acting as a consultant, providing statistical support to the pharmaceutical, biotechnology, and healthcare consultancy sectors. Outside of research, Antonio is a musician and DJ.
Larry Dong
Larry DongGrad Student PhD
Larry is a student pursuing a PhD in biostatistics at the Dalla Lana School of Public Health at the University of Toronto in Toronto, Canada. Prior to coming to Toronto, he grew up in Montreal and studied at McGill University and at the University of Bordeaux. His research interests include Bayesian methods and causal inference, more specifically dynamic treatment regimes. During his free time, he enjoys playing basketball, skateboarding and doing dishes for his roommate who cooks very well.