![\"Eleanor](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2020\/09\/Eleanor_Headshot3-157x300.jpg\")
<\/div><\/div>Eleanor Pullenayegum, PhD<\/span>Senior Scientist<\/span><\/div>
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Eleanor is a biostatistician whose primary work focuses on developing methodology for longitudinal data and health economics. She trained at the University of Cambridge (BA and MA in mathematics), the University of Toronto (PhD in Biostatistics with Dr. Andrew Willan) and the University of Waterloo (postdoctoral fellowship with Dr. Richard Cook). She worked as a consulting biostatistician at the Department of Public Health and Primary Care at the University of Cambridge before coming to Toronto to pursue her PhD. Before assuming her current position at SickKids, she was on faculty at McMaster in the Department of Clinical Epidemiology & Biostatistics. When she is not working, Eleanor’s favourite activity is taking her daughter to the splashpad or playground, or just joining her wherever her sweet little imagination leads.<\/div><\/div><\/div><\/div><\/div>![\"Alexandra](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2021\/07\/Alex_headshot-191x300.jpg\")
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<\/div><\/div>Alexandra Goodhand<\/span>Graduate Student<\/span><\/div>
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Alex Goodhand completed a bachelor of science in Mathematics and bachelor of education at Queen\u2019s University and master of science in Mathematics at McMaster University. Alex is currently a PhD in Biostatistics student at the University of Toronto and is working towards developing methods that account for measurement error and misclassification in longitudinal data with irregular observation times. In her spare time, Alex likes knitting, playing games and watching tv shows. <\/div><\/div><\/div><\/div><\/div>![\"Fatema](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2023\/04\/20230308_163009_edited-218x300.jpg\")
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<\/div><\/div>Fatema Johara<\/span>Graduate Student<\/span><\/div>
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Fatema is a PhD student in biostatistics at the University of Toronto. Her doctoral thesis involves developing methods for variability in irregularly observed longitudinal data. Previously, she completed her master\u2019s degree in biostatistics, and bachelor\u2019s degree in applied statistics. In her spare time, Fatema enjoys gardening, photography, and volunteering.<\/div><\/div><\/div><\/div><\/div>![\"George](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2023\/01\/George_edited-254x300.jpg\")
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<\/div><\/div>George Stefan<\/span>Graduate Student<\/span><\/div>
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George is a PhD student in biostatistics at the Dalla Lana School of Public Health, and joined the STRIVE lab in November 2022 as a research student supervised by Dr. Eleanor Pullenayegum. His doctoral thesis involves developing methodology for the analysis of irregularly observed longitudinal data, particularly in settings of informative dropout and left-truncation. Prior to studying at the University of Toronto, he completed a master\u2019s degree in statistics at the University of Guelph and a bachelor\u2019s degree in mathematics at McGill University. In his spare time, George enjoys biking and going on walks through the city.<\/div><\/div><\/div><\/div><\/div>![\"Yi](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2023\/01\/Naomi_edited-199x300.jpg\")
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<\/div><\/div>Yi Meng (Naomi) Chang<\/span>Graduate Student<\/span><\/div>
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Naomi is a flex-time PhD student in biostatistics and also a clinical trialist in the pharmaceutical industry. She has a profound interest in solving healthcare problems using sound statistical methods. In particular, she is interested in clinical trial design as well as health economic evaluations. In her spare time, she enjoys painting, hiking and board games. <\/div><\/div><\/div><\/div><\/div>![\"Larry](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2023\/01\/Larry_edited-228x300.jpg\")
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<\/div><\/div>Larry Dong<\/span>Graduate Student<\/span><\/div>
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Larry is a PhD student in biostatistics jointly supervised by Dr. Olli Saarela and Dr. Eleanor Pullenayegum. He previously completed both his BSc in mathematics and MSc in biostatistics at McGill University and an MSc in Public Health Data Science at the University of Bordeaux. His PhD thesis revolves around the estimation optimal treatment regimes with irregularly observed data. He is also passionate about open-source software, as he currently serves as a GitHub Campus Expert, and regularly contributes to PyMC, a Python package for Bayesian modelling. Outside of school, he enjoys skateboarding, playing volleyball and eating fruits, especially grapes, bananas, oranges, watermelon and nectarines.<\/div><\/div><\/div><\/div><\/div><\/div><\/div>![\"Xiangshan](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2025\/11\/Sandy_edit-201x300.jpg\")
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<\/div><\/div>Xiangshan Kong (Sandy)<\/span>Clinical Research Project Assistant<\/span><\/div><\/div>
Sandy is a PhD student in Biostatistics at the University of Toronto. She completed her undergraduate degree in Statistics and Mathematics at the University of Toronto and her master\u2019s degree in Statistics at the University of Waterloo. Her current research focuses on developing statistical methods to address outcome-dependent missingness in irregular longitudinal data. In her spare time, Sandy enjoys playing badminton, hiking, and joining friends on random \u201cmystery\u201d outings (where she does not know the destination in advance).<\/div><\/div><\/div><\/div><\/div>![\"Min](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2025\/11\/Image_1_optimized_2000-225x300.jpeg\")
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<\/div><\/div>Min Zhu<\/span>Grad Student - MSc Candidate<\/span><\/div><\/div>
Min made her BMath of Biostatistics at University of Waterloo and am currently a MSc. Biostatistics student at University of Toronto. Her practicum topic is about if a diagnosis of asthma is associated with an increased incidence of depression diagnosis. Other than work, she loves cooking, playing video games and doing martial arts (Karate, Brazilian Jujitsu).<\/div><\/div><\/div><\/div><\/div>![\"Poonam](\"https:\/\/lab.research.sickkids.ca\/pullenayegum\/wp-content\/uploads\/sites\/103\/2023\/07\/My-SickKids-Picture-cropped-279x300.jpg\")
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