Roger Zemek

Senior Scientist, CHEO Research Institute

Dr. Zemek is a pediatric emergency researcher with experience in multicenter studies, randomized controlled trials, and systematic reviews. He has research experience in pediatric concussion, including systematic reviews, guideline development, health administrative datasets, derivation and validation of clinical prediction rules, and interventional trials. Dr. Zemek is leading a national research program on pediatric concussion, through which he conducted the largest pediatric concussion study in the world to-date examining the predictors for Persistent Post-Concussion Symptoms in children suffering a concussion (5P study).

Dr. Zemek co-leads the Living Guideline for Pediatric Concussion, a project that is supported by the Ontario Ministry of Health. Information for patients and families on these guidelines can be found here and Clinical Recommendations for health care professionals providing care for pediatric patients with a suspected concussion can be found here.

Dr. Zemek is the chair of the Pediatric Emergency Research Canada (PERC) network and is also an investigator on multiple asthma studies, the PATCH COVID-19 antibody study, and mental health studies of children presenting to the Emergency Department.

Related News

Research Projects

  1. Risk of Mental Health Problems in Children and Youth Following Concussion: A Population-Based Retrospective Cohort Study


    Among children and youths aged 5 to 18 years, concussion was associated with an increased risk of mental health issues, psychiatric hospitalization, and self-harm compared with children and youths with an orthopedic injury.

  2. Building Resilience and Attachment in Vulnerable Adolescents (BRAVA): a brief group intervention for adolescents with mild-to-moderate suicidal ideation and their caregivers


    Further studies are required to establish BRAVA’s efficacy in a randomized controlled trial.

  3. Sex-based differences in symptoms with mouthguard use following pediatric sport-related concussion


    Athletes are still encouraged to wear mouthguards during sports because overwhelming evidence supports their use in preventing dental injuries.

  4. Association between pre-injury symptoms and post-concussive symptoms at 4-weeks in youth and adolescents


    Providers should consider preinjury symptoms to inform prognosis and recovery management.

  5. Effect of Nebulized Magnesium vs Placebo Added to Albuterol on Hospitalization Among Children With Refractory Acute Asthma Treated in the Emergency Department: A Randomized Clinical Trial


    Among children with refractory acute asthma in the emergency department, nebulized magnesium with albuterol, compared with placebo with albuterol, did not significantly decrease the hospitalization rate for asthma within 24 hours. The findings do not support use of nebulized magnesium with albuterol among children with refractory acute asthma.