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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. Ray, JG, Pirouzmand, N, Park, AL, Austin, PC, Vigod, S, Grandi, S et al.. Prematurity at birth and risk of self-injury, overdose or death in adolescence and early adulthood: A population-based cohort study. Ann Epidemiol. 2025;108 :34-42. doi: 10.1016/j.annepidem.2025.06.002. PubMed PMID:40482940 .
  2. Brown, HK, Lunsky, Y, Fung, K, Santiago-Jimenez, M, Camden, A, Cohen, E et al.. Maternal Disability and Emergency Department Use for Infants. JAMA Netw Open. 2025;8 (5):e258549. doi: 10.1001/jamanetworkopen.2025.8549. PubMed PMID:40323599 PubMed Central PMC12053526.
  3. Wing, S, Ray, JG, Yau, K, Jeyakumar, N, Abdullah, S, Luo, B et al.. SGLT2 Inhibitors and Risk for Hyperkalemia Among Individuals Receiving RAAS Inhibitors. JAMA Intern Med. 2025; :. doi: 10.1001/jamainternmed.2025.0686. PubMed PMID:40293730 PubMed Central PMC12038716.
  4. Brown, HK, Fung, K, Mataruga, A, Strauss, R, Chan, V, Urbach, N et al.. A population-based cohort study of perinatal mental illness following traumatic brain injury. Epidemiol Psychiatr Sci. 2025;34 :e19. doi: 10.1017/S2045796025000150. PubMed PMID:40079132 PubMed Central PMC11955423.
  5. Jairam, JA, Cohen, E, Diong, C, Berger, H, Brown, HK, Guan, J et al.. Maternal Downward Neighborhood Income Mobility and Ensuing Severe Neonatal Morbidity. JAMA Pediatr. 2025;179 (4):463-465. doi: 10.1001/jamapediatrics.2024.6667. PubMed PMID:39960682 PubMed Central PMC11833651.
  6. Ray, JG, Butler, EA, Grandi, SM, Cohen, E. Maternal-newborn ABO Blood Group Congruence Among Consecutive Births and Risk of Serious Neonatal Infection: Retrospective Cohort Study. Pediatr Infect Dis J. 2025;44 (7):683-687. doi: 10.1097/INF.0000000000004728. PubMed PMID:39854201 PubMed Central PMC12150787.
  7. Jairam, JA, Cohen, E, Diong, C, Brown, HK, Guan, J, Berger, H et al.. Joint Effects of Maternal Comorbidity and Neighbourhood Income Mobility on the Ensuing Risk of Severe Maternal Morbidity. BJOG. 2025; :. doi: 10.1111/1471-0528.18078. PubMed PMID:39834027 .
  8. Brown, HK, Gomes, T, Wilton, AS, Camden, A, Guttmann, A, Dennis, CL et al.. Maternal Chronic Physical Conditions and Alcohol and Substance Use Disorders in the Preconception and Perinatal Periods. J Womens Health (Larchmt). 2025;34 (4):504-512. doi: 10.1089/jwh.2024.0757. PubMed PMID:39791195 .
  9. Scime, NV, Velez, MP, Choi, MY, Ray, JG, Boblitz, A, Brown, HK et al.. Association between infertility and incident onset of systemic autoimmune rheumatic disease after childbirth: a population-based cohort study. Hum Reprod. 2025;40 (1):157-166. doi: 10.1093/humrep/deae253. PubMed PMID:39656875 PubMed Central PMC11700898.
  10. 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.
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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