Charles Keown-Stoneman




Dr. Charles (Charlie) Keown-Stoneman is an Investigator/Biostatistician in the Applied Health Research Centre at St. Michael’s Hospital and an Assistant Professor of Biostatistics in the Dalla Lana School of Public Health at the University of Toronto. Dr. Keown-Stoneman received his PhD and MSc in Applied Statistics and BSc in Biological Science from the University of Guelph. Dr. Keown-Stoneman has experience providing statistical support for various research teams across Canada, and was a visiting academic at the University of Oxford. He also has experience teaching undergraduate and graduate statistics courses, and working with graduate students on various committees. In his current role at the AHRC, Dr. Keown-Stoneman provides statistical analysis and support for observational studies and randomized trials. Currently, Dr. Keown-Stoneman is mainly working within the TARGetKids! research group, investigating impacts on the health and nutrition of healthy children within Canada. During the COVID-19 pandemic, Dr. Keown-Stoneman has been directly involved in the rapid roll-out of the TARGetKids COVID study, which is monitoring and assessing the short and long term impacts of the pandemic and its repercussions on children and their families. His research interests include survival analysis, multi-state models, and longitudinal data analysis.

Recent Publications

  1. King, N, Pickett, W, Keown-Stoneman, CDG, Miller, CB, Li, M, Duffy, A et al.. Changes in sleep and the prevalence of probable insomnia in undergraduate university students over the course of the COVID-19 pandemic: findings from the U-Flourish cohort study. BJPsych Open. 2023;9 (6):e210. doi: 10.1192/bjo.2023.597. PubMed PMID:37933532 .
  2. Persaud, N, Azarpazhooh, A, Keown-Stoneman, C, Birken, CS, Isaranuwatchai, W, Maguire, JL et al.. Xylitol for the prevention of acute otitis media episodes in children aged 1-5 years: a randomised controlled trial. Arch Dis Child. 2023; :. doi: 10.1136/archdischild-2023-325565. PubMed PMID:37890960 .
  3. D'Hollander, CJ, Keown-Stoneman, CDG, Birken, CS, O'Connor, DL, Maguire, JL, TARGet Kids! collaboration et al.. Timing of introduction to solid food, eczema and wheezing in later childhood: a longitudinal cohort study. BMC Pediatr. 2023;23 (1):514. doi: 10.1186/s12887-023-04262-0. PubMed PMID:37845652 PubMed Central PMC10577938.
  4. Massara, P, Asrar, A, Bourdon, C, Ngari, M, Keown-Stoneman, CDG, Maguire, JL et al.. New approaches and technical considerations in detecting outlier measurements and trajectories in longitudinal children growth data. BMC Med Res Methodol. 2023;23 (1):232. doi: 10.1186/s12874-023-02045-w. PubMed PMID:37833647 PubMed Central PMC10576311.
  5. Nurse, KM, Parkin, PC, Keown-Stoneman, CDG, Bayoumi, I, Birken, CS, Maguire, JL et al.. Association Between Family Income and Positive Developmental Screening Using the Infant Toddler Checklist at the 18-Month Health Supervision Visit. J Pediatr. 2023;264 :113769. doi: 10.1016/j.jpeds.2023.113769. PubMed PMID:37821023 .
  6. Li, X, Keown-Stoneman, CDG, Anderson, LN, Allan, K, Fallon, BA, Parsons, JA et al.. Factors associated with COVID-19 vaccination in young children. Can J Public Health. 2023; :. doi: 10.17269/s41997-023-00817-x. PubMed PMID:37796366 .
  7. Palumbo, AM, Kirkwood, D, Borkhoff, CM, Keown-Stoneman, CDG, Muraca, GM, Fuller, A et al.. Validation of Parent-reported Gestational Age Categories for Children Less Than 6 Years of Age. Epidemiology. 2023;34 (6):767-773. doi: 10.1097/EDE.0000000000001645. PubMed PMID:37757868 .
  8. Yoshida-Montezuma, Y, Kirkwood, D, Sivapathasundaram, B, Keown-Stoneman, CDG, de Souza, RJ, To, T et al.. Late preterm birth and growth trajectories during childhood: a linked retrospective cohort study. BMC Pediatr. 2023;23 (1):450. doi: 10.1186/s12887-023-04257-x. PubMed PMID:37684561 PubMed Central PMC10485950.
  9. Pankow, K, King, N, Li, M, Byun, J, Jugoon, L, Rivera, D et al.. Acceptability and utility of digital well-being and mental health support for university students: A pilot study. Early Interv Psychiatry. 2023; :. doi: 10.1111/eip.13458. PubMed PMID:37650447 .
  10. Lorenzo, A, Kthupi, A, Liu, W, Hamza, C, Todorova, AA, Kuburi, S et al.. The mental health impact of the COVID-19 pandemic on post-secondary students: A longitudinal study. Psychiatry Res. 2023;327 :115401. doi: 10.1016/j.psychres.2023.115401. PubMed PMID:37567112 .
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Affiliations & Other Activities

Assistant Professor, Dalla Lana School of Public Health, University of Toronto