Joel Ray


Scientist, Li Ka Shing Knowledge Institute


Clinician-Scientist with a focus on premature mortality, pregnancy, fetal medicine, neonatology and thrombosis. An epidemiologist with experience in large-scale observational studies.

Recent Publications

  1. Janoudi, G, Uzun Rada, M, Fell, DB, Ray, JG, Foster, AM, Giffen, R et al.. Outlier analysis for accelerating clinical discovery: An augmented intelligence framework and a systematic review. PLOS Digit Health. 2024;3 (5):e0000515. doi: 10.1371/journal.pdig.0000515. PubMed PMID:38776276 PubMed Central PMC11111092.
  2. Nelson, CR, Dzakpasu, S, Moore, AM, Darling, EK, Edwards, W, Murphy, P et al.. Diabetes mellitus in pregnancy across Canada. BMC Pregnancy Childbirth. 2024;24 (1):349. doi: 10.1186/s12884-024-06534-8. PubMed PMID:38714923 PubMed Central PMC11075222.
  3. Sorbara, C, Ray, JG, Darling, EK, Chung, H, Podolsky, S, Stukel, TA et al.. Postpartum Emergency Department Use Following Midwifery-Model vs Obstetrics-Model Care. JAMA Netw Open. 2024;7 (4):e248676. doi: 10.1001/jamanetworkopen.2024.8676. PubMed PMID:38683610 PubMed Central PMC11059030.
  4. Velez, MP, Soule, A, Gaudet, L, Pudwell, J, Nguyen, P, Ray, JG et al.. Multifetal Pregnancy After Implementation of a Publicly Funded Fertility Program. JAMA Netw Open. 2024;7 (4):e248496. doi: 10.1001/jamanetworkopen.2024.8496. PubMed PMID:38662369 PubMed Central PMC11046352.
  5. Brown, HK, Strauss, R, Fung, K, Mataruga, A, Chan, V, Mollayeva, T et al.. Mental Illness in the 2 Years Prior to Pregnancy in a Population With Traumatic Brain Injury: A Cross-Sectional Study: La maladie mentale dans les deux ans précédant une grossesse dans une population souffrant de lésion cérébrale traumatique : une étude transversale. Can J Psychiatry. 2024; :7067437241249957. doi: 10.1177/07067437241249957. PubMed PMID:38659409 .
  6. Blackman, A, Ukah, UV, Platt, RW, Meng, X, Shapiro, GD, Malhamé, I et al.. Severe Maternal Morbidity and Mental Health Hospitalizations or Emergency Department Visits. JAMA Netw Open. 2024;7 (4):e247983. doi: 10.1001/jamanetworkopen.2024.7983. PubMed PMID:38652472 PubMed Central PMC11040413.
  7. Belza, C, Szentkúti, P, Horváth-Puhó, E, Ray, JG, Nelson, KE, Grandi, SM et al.. Use of Latent Class Analysis to Predict Intensive Care Unit Admission and Mortality in Children with a Major Congenital Anomaly. J Pediatr. 2024;270 :114013. doi: 10.1016/j.jpeds.2024.114013. PubMed PMID:38494089 .
  8. Ray, JG, Fu, L, Austin, PC, Park, AL, Brown, HK, Grandi, SM et al.. Teen Pregnancy and Risk of Premature Mortality. JAMA Netw Open. 2024;7 (3):e241833. doi: 10.1001/jamanetworkopen.2024.1833. PubMed PMID:38483391 PubMed Central PMC10940968.
  9. Butler, EA, Grandi, SM, Matai, L, Wang, X, Cohen, E, Ray, JG et al.. Differences in maternal-newborn ABO blood groups and risk of serious infant infection. QJM. 2024; :. doi: 10.1093/qjmed/hcae035. PubMed PMID:38402542 .
  10. Velez, MP, Shellenberger, JP, Ray, JG. Author reply. BJOG. 2024; :. doi: 10.1111/1471-0528.17781. PubMed PMID:38351674 .
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Affiliations & Other Activities

  • Scientist, Institute for Clinical Evaluative Sciences (ICES)
  • Sick Kids Research Institute
  • Professor, Institute of Health Policy, Management and Evaluation, University of Toronto
  • Professor, Department of Medicine, University of Toronto