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Research
Latest papers
Low-Value Computed Tomography for Children in the Emergency Department: A Repeated Cross-Sectional Study.
Pediatric emergency care · 2026 · senior author
Characteristics and Outcomes of Adults Hospitalized With Childhood-Onset Complex Chronic Conditions.
JAMA network open · 2026 · senior author
Multiple Maternal Chronic Conditions and Risk of Severe Neonatal Morbidity and Mortality.
JAMA network open · 2026
Latest funding
- $497,250
Health and socioeconomic outcomes of each parent after the birth of a sick infant
CIHR · 2026 · Nominated PI
- $466,650
Downward income mobility between births and risk of adverse maternal and infant outcomes
CIHR · 2024 · Principal investigator
- $75,000
Maternal-newborn ABO blood group congruence and risk of infant invasive bacterial infection, as well as of infant respiratory syncytial virus infection.
CIHR · 2024 · Co-investigator
From the 150 most recent of 281 publications.
Low-Value Computed Tomography for Children in the Emergency Department: A Repeated Cross-Sectional Study.
Freire GC, Diong C, Gandhi S, Saunders NR, Neuman MI, Freedman SB, Friedman JN, Cohen E
Characteristics and Outcomes of Adults Hospitalized With Childhood-Onset Complex Chronic Conditions.
Malecki SL, Shen T, Loffler A, Stukel TA, de Oliveira C, Roberts SB, Bassett AS, Nelson KE, Razak F, Verma AA, Cohen E
Multiple Maternal Chronic Conditions and Risk of Severe Neonatal Morbidity and Mortality.
Brown HK, Fung K, Cohen E, Dennis CL, Grandi SM, Rosella LC, Varner C, Vigod SN, Wigle J, Wodchis WP, Ray JG
Multiple Chronic Conditions Before Pregnancy and Risk of Adverse Maternal Health Outcomes: Population-Based Cohort Study.
Brown HK, Fung K, Cohen E, Dennis CL, Grandi SM, Rosella LC, Varner C, Vigod SN, Wodchis WP, Ray JG
Pregnancy as a socioeconomic stress test: Trends in middle-income mobility between consecutive births.
Jairam JA, Guan J, Cohen E, Brown HK, Ray JG
Education Program for Family Caregivers of Children With Medical Complexity in the Transition to Home.
Mekhuri S, Orkin J, Munn J, Cohen E, Keilty K, Chu S, Major N, Dussah N, Fayed N, Chhokar R, Moretti ME, Buchanan F, Langrish K, Van Clieaf J, Amin R
Attention-deficit hyperactivity disorder and perinatal mental illness: a population-based study.
Vigod SN, Zipursky J, Babujee A, Barker LC, Bolea-Alamanac B, Clark CT, Cohen E, Dennis CL, Feldman M, Gomes T, Habib S, Lu H, Maxwell C, Patrikar A, Ray JG, Saunders N, Toulany A, Xie A, Brown HK
Growing pains: adult subspecialist perspectives on improving transition from paediatric to adult care for youth with complex health conditions.
Malecki S, Nwebube C, Orkin J, Halperin I, Khan N, John T, Katzberg H, Steiman A, Matta R, Abdelhalim T, Andrade DM, Bollegala N, Bush S, Ryan C, Colapinto K, Dimaraki E, Faghfoury H, Fu J, Gakhal N, Gent K, Korenblum C, Lansang P, Lega IC, Lim-Fat MJ, Liu J, Miranda S, Mukerji G, Pagnoux C, Vandepoele E, Vinik O, Wentzel K, Yates D, Cohen E, Toulany A
CMC-ID: identifying children and youth with medical complexity using an electronic health record.
Santos S, Bruno-Boucher L, Benjamin H, Arenas-Rodriguez B, Soscia J, Colapinto K, Miranda S, Nelson K, Orkin J, Gill PJ, Toulany A, Yi M, Sung L, Cohen E
Early Adulthood Outcomes Among Individuals With Neurologic Impairment and Technology Assistance.
Doig J, Shulman R, Pullenayegum E, Guttmann A, Cohen E
Health and socioeconomic outcomes of each parent after the birth of a sick infant
Principal investigators: Cohen, Eyal; Pechlivanoglou, Petros; Ray, Joel G
Keywords: Caregiver Health; Congenital Anomalies; Health Outcomes; Neonatal Morbidity; Neurologic Impairment; Pregnancy; Prematurity; Socioeconomic Outcomes
Downward income mobility between births and risk of adverse maternal and infant outcomes
Principal investigators: Ray, Joel G; Cohen, Eyal
Keywords: Emergency Department Use; Income; Infant; Injury; Morbidity; Newborn; Obstetrics; Pregnancy; Preterm Birth; Socioeconomic
Maternal-newborn ABO blood group congruence and risk of infant invasive bacterial infection, as well as of infant respiratory syncytial virus infection.
Principal investigators: Grandi, Sonia
Keywords: Abo Blood Group; Administrative Data; Caterial Infection; Infant; Neonate; Pregnancy; Red Cells; Respiratory Syncytial Virus; Sepsis; Transplacental
Investigating the Evolution of Healthcare Networks During the Transition From Paediatric to Adult Healthcare Systems for Youth with Medical Complexity: A Multi-Method Social Network Approach
Principal investigators: Henriques, Natasha
Keywords: Child Health; Complex Care; Healthcare Network; Healthcare Utilization; Qualitative Meta-Aggregation; Social Network Analysis; Systems Science; Transitional Care; Transitions To Adult Care; Youth With Medical Complexity
Maternal Attention Deficit Hyperactivity Disorder (m-ADHD): Mental Health, Pregnancy and Infant Outcomes
Principal investigators: Vigod, Simone N; Brown, Hilary; Zipursky, Jonathan S
Keywords: Adhd; Postpartum; Pregnancy
Real-World Evidence for Canadian Neuromuscular Disease: Establishing a Framework for National Integration of Patient Reported Outcomes, Clinical Registry Data, Healthcare Utilization and Healthcare Associated Costs
Principal investigators: Amin, Reshma; Osman, Homira; Cohen, Eyal; Hodgkinson, Victoria; Jewett, Gordon; Lochmüller, Hanns
Keywords: Health Services Research; Healthcare Service Utilization; Neuromuscular Disease; Registry
Defining a Stage-Based Framework of Comorbidities among Children with Severe Neurologic Impairment
Principal investigators: Nelson, Katherine E
Keywords: Children With Medical Complexity; Comorbidities; Feeding Intolerance; Severe Neurologic Impairment; Stages Of Progression
Pregnancy Outcomes and Care of Women with Physical-Mental Multimorbidity
Principal investigators: Brown, Hilary; Ray, Joel G; Vigod, Simone N
Keywords: Physical-Mental Multimorbidity; Population-Based Data; Pregnancy Care; Pregnancy Outcomes; Qualitative Interviews
Preconception A1c, interaction with maternal-newborn factors, and risk of child autism spectrum disorder
Principal investigators: Ray, Joel G
Keywords: A1c; Assisted Reproduction; Autism Spectrum Disorder; Body Mass Index; Childhood; Cohort Study; Glycemic Control; Hypertension; Pcos; Pregnancy
Aspirin and severe maternal morbidity and mortality and adverse pregnancy outcomes
Principal investigators: Grandi, Sonia; Ray, Joel G
Keywords: Adverse Pregnancy Outcomes; Cardiovascular Severe Maternal Morbidity And Mortality; Pregnancy; Severe Maternal Morbidity And Mortality
From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.
Frequent collaborators
- Pediatrics
- Surgery
- Obstetrics and Gynecology
- Medicine
- Department of Paediatrics
- Nutritional Sciences
- Epidemiology and Public Health
- Other
Co-authors at University of Toronto, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.
Julia Orkin
Faculty
41 shared papers, latest 2026
Sanjay Mahant
Pediatrics
32 shared papers, latest 2026
Astrid Guttmann
Department of Paediatrics
32 shared papers, latest 2026
Alene Toulany
Pediatrics
20 shared papers, latest 2026
Francine Buchanan
Pediatrics
14 shared papers, latest 2026
Martin Offringa
Surgery
12 shared papers, latest 2026
Cindy-Lee Dennis
Nutritional Sciences
11 shared papers, latest 2026
Reshma Amin
Faculty
11 shared papers, latest 2026
Maureen Smith
Epidemiology and Public Health
10 shared papers, latest 2026
Natasha Saunders
Pediatrics
10 shared papers, latest 2026
An-Wen Chan
Faculty
8 shared papers, latest 2026
Simone Vigod
Family Practice
8 shared papers, latest 2025
Kimberly Courtney
Psychiatry
8 shared papers, latest 2026
David Moher
School of Epidemiology and Public Health
8 shared papers, latest 2026
Thierry Lacaze-Masmonteil
Obstetrics and Gynecology
8 shared papers, latest 2026
Lisa Hartling
Pediatrics
8 shared papers, latest 2026
Rayzel Shulman
Pediatrics
7 shared papers, latest 2026
Howard Berger
Obstetrics and Gynecology
6 shared papers, latest 2026
Eleanor Pullenayegum
Biostatistics Division
6 shared papers, latest 2026
Michael Livingston
Surgery
6 shared papers, latest 2025
Yona Lunsky
Faculty
5 shared papers, latest 2026
Audrey Lim
Pediatrics
5 shared papers, latest 2024
Jonathan Mark Walton
Surgery
5 shared papers, latest 2021
Gita Wahi
Pediatrics
4 shared papers, latest 2026
Andy Willan
Health Research Methods, Evidence, and Impact
3 shared papers, latest 2023
Lucia Giglia
Pediatrics
3 shared papers, latest 2020
Jennifer MacKenzie
Pediatrics
3 shared papers, latest 2026
Anne Fuller
Pediatrics
2 shared papers, latest 2022
Murray Alexander Potter
Pathology & Molecular Medicine
2 shared papers, latest 2026
Michelle Gordon
Pediatrics
2 shared papers, latest 2022
Helene Flageole
Surgery
1 shared papers, latest 2025
Christina Grant
Pediatrics
1 shared papers, latest 2015
Katherine Morrison
Pediatrics
1 shared papers, latest 2022
Alison Holloway
Obstetrics & Gynecology
1 shared papers, latest 2022
Mo Eltorki
Pediatrics
1 shared papers, latest 2025
Jessica Hopkins
Health Research Methods, Evidence, and Impact
1 shared papers, latest 2022
Amit Mukerji
Pediatrics
1 shared papers, latest 2020
Michelle Shapiro
Medicine
1 shared papers, latest 2017
Nikhil Pai
Pediatrics
1 shared papers, latest 2018
Herbert Brill
Pediatrics
1 shared papers, latest 2015
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