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Joel Ray

MD MSc FRCPC

Scientist, Li Ka Shing Knowledge Institute

Tel: 416 864-6060
Email: Joel.Ray@unityhealth.to

Research Programs

Biography

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. Harel, Z, Jeyakumar, N, Smith, G, Ray, JG, Clemens, KK, Juurlink, DN et al.. Rhabdomyolysis and Sodium-Glucose-Linked Transport Inhibitors in Patients Taking Statins. JAMA Netw Open. 2024;7 (11):e2446641. doi: 10.1001/jamanetworkopen.2024.46641. PubMed PMID:39541123 PubMed Central PMC11565259.
  2. Butler, EA, Ray, JG, Cohen, E. Maternal-Newborn ABO Blood Groups and Risk of Bacterial Infection in Newborns. JAMA Netw Open. 2024;7 (10):e2442227. doi: 10.1001/jamanetworkopen.2024.42227. PubMed PMID:39476233 PubMed Central PMC11525604.
  3. Metcalfe, A, Cairncross, ZF, McMorris, CA, Friedenreich, CM, Nelson, G, Bhatti, P et al.. Cancer chemotherapy in pregnancy and adverse pediatric outcomes: a population-based cohort study. J Natl Cancer Inst. 2024; :. doi: 10.1093/jnci/djae273. PubMed PMID:39475425 .
  4. Jairam, JA, Cohen, E, Diong, C, Berger, H, Guan, J, Butler, EA et al.. Maternal Downward Neighborhood Income Mobility and Newborn Discharge to Child Protective Services. JAMA Netw Open. 2024;7 (10):e2440604. doi: 10.1001/jamanetworkopen.2024.40604. PubMed PMID:39441599 PubMed Central PMC11581567.
  5. Velez, MP, Ivanova, M, Shellenberger, J, Pudwell, J, Ray, JG. Severe Maternal and Neonatal Morbidity Among Gestational Carriers : A Cohort Study. Ann Intern Med. 2024;177 (11):1482-1488. doi: 10.7326/M24-0417. PubMed PMID:39312777 .
  6. Aoyama, K, Yang, A, Pinto, R, Ray, JG, Hill, A, Scales, DC et al.. Using multi-level regression to determine associations and estimate causes and effects in clinical anesthesia due to patient, practitioner and hospital or health system practice variability. J Anesth. 2024; :. doi: 10.1007/s00540-024-03408-3. PubMed PMID:39292247 .
  7. Scime, NV, Grandi, SM, Ray, JG, Dennis, CL, De Vera, MA, Banack, HR et al.. Pregnancy complications and new-onset maternal autoimmune disease. Int J Epidemiol. 2024;53 (5):. doi: 10.1093/ije/dyae115. PubMed PMID:39191479 PubMed Central PMC11349189.
  8. Nelson, CRM, Ray, JG, Auger, N, Moore, AM, Little, J, Murphy, PA et al.. Neonatal Adverse Outcomes among Hospital Livebirths in Canada: A National Retrospective Study. Neonatology. 2024; :1-8. doi: 10.1159/000540559. PubMed PMID:39173602 .
  9. Metcalfe, A, Cairncross, ZF, Ray, JG, Shack, L, Nelson, G, Friedenreich, CM et al.. Procedural abortion, provider-initiated preterm delivery and survival in pregnant people with cancer: A population-based cohort study. BJOG. 2025;132 (1):81-88. doi: 10.1111/1471-0528.17937. PubMed PMID:39169531 PubMed Central PMC11612611.
  10. Dzakpasu, S, Nelson, C, Darling, EK, Edwards, W, Murphy, PA, Scott, H et al.. Trends in rate of hypertensive disorders of pregnancy and associated morbidities in Canada: a population-based study (2012-2021). CMAJ. 2024;196 (26):E897-E904. doi: 10.1503/cmaj.231547. PubMed PMID:39074863 PubMed Central PMC11286177.
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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