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John D. McLennan photo of Dr. John McLennan
Child Psychiatry Consultant, CHEO
Scientist, CHEO Research Institute
Research Chair in Child & Adolescent Psychiatry & Associate Professor,
Department of Psychiatry, University of Ottawa
613-737-7600 Ext. 2541
Research Practice Areas:
Current Research:
Dr. McLennan is interested in the patterns of use, and the associated effectiveness, of children's health services. He has recently finished a telehealth pilot project aimed at improving teachers' implementation of an evidence-based, positive behavioural support approach (the Daily Report Card [DRC]) to aid students struggling with attention and behavioural difficulties. An anticipated next step is examining further rollout of the DRC using web-based tools developed at Ohio University. Dr. McLennan also aims to replicate this previous experience with successfully embedding a measurement feedback monitoring system within the routine delivery of psychopharmacological treatment for children with severe attention and behavioural struggles. He is also working on the health service research components of several studies based at McMaster University including a recent Brain Canada funded study: "Making the Race Fair for Young Children at Risk."
Research Team:
  • Miki Perez - Research Coordinator, Dominican Republic
  • Rosemary Perry - Research Coordinator, Calgary
  • Hugues Sampasa-Kanyinga - Research Coordinator, Ottawa
Dr. McLennan is a child psychiatrist and health services researcher. Education and training were obtained at the University of Alberta (BMedSc & MD), University of Pittsburgh (MPH & residency in general and child psychiatry), University of North Carolina at Chapel Hill (fellowship in community psychiatry & residency in preventive medicine) and McMaster University (PhD in health research methodology). Most recently he was an associate professor at the University of Calgary.
Sample Publications:
McLennan, J. D. (2017 July) "It's more complicated than myth busting: Parents deciding about stimulant use for their children" (Letter to the Editor). Journal of the Canadian Academy of Child & Adolescent Psychiatry. 26(2): 68-69. 
McLennan, J. D. (2016). Understanding attention deficit hyperactivity disorder as a continuum. Canadian Family Physician, 62(12), 979-982. 
McLennan, J. D., & MacMillan, H.L. (2016) Routine primary care screening for intimate partner violence and other adverse psychosocial exposures: What's the evidence? BMC Family Practice, 17(1), 103. 
McLennan, J. D., (2016). Changes in caesarean section rates and milk feeding patterns of infants between 1986 and 2013 in the Dominican Republic. Public Health Nutrition, 1-10.  
McLennan, J. D., & Steele, M. (2016). Anemia Screening and Treatment Outcomes of Children in a Low-resource Community in the Dominican Republic. Journal of Tropical Pediatrics, 62(2), 116-112. 
McLennan, J. D., (2015). Misattributions and potential consequences: the case of child mental health problems and fetal alcohol spectrum disorders. Canadian Journal of Psychiatry. Revue canadienne de psychiatrie, 60(12), 587.
Wagner, D.J., & McLennan, J. D., (2015). An Alternative Approach to Scoring the MTA-SNAP-IV to Guide Attention-Deficit/Hyperactivity Disorder Medication Treatment Titration towards Symptom Remission: A Preliminary Consideration. Journal of Child and Adolescent Psychopharmacology, 25(10), 749-753.
McLennan J. D., (2015) Persisting without evidence is a problem: suicide prevention and other well-intentioned interventions. Journal of the Canadian Academy of Child and Adolescent Psychiatry, 24(2), 131.
McLennan, J. D., (2015). Wait time to what? Could reducing wait times for child mental health services worsen outcomes? Journal of the Canadian Academy of Child and Adolescent Psychiatry, 24(1), 55.
 McLennan J. D., (2015). Listening to Bickman: Findings from Child Mental Health Services Research. Journal of the Canadian Academy of child and Adolescent Psychiatry, 24(1), 59.
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