Nicholas Vozoris


Associate Scientist, Li Ka Shing Knowledge Institute


Dr. Vozoris is an Assistant Professor and Clinician Investigator within the Division of Respirology, Department of Medicine, at the University of Toronto. He is also a Staff Respirologist at St. Michael’s Hospital with expertise in sleep medicine, hereditary hemorrhagic telangiectasia (HHT) and tuberculosis. He completed a Masters of Health Sciences degree in the Department of Community Health at the University of Toronto prior to his medical training. He also undertook research training at the Institute of Clinical Evaluative Sciences prior to coming on faculty at the University of Toronto. His main research interest is areas of overlap between sleep medicine and obstructive lung disease, such as the pharmacoepidemiology and health outcomes of sedative medication use in chronic respiratory disease populations. He also has research interests in the health effects of insomnia.  He uses observational study designs and techniques, and different types of pre-existing, population-based databases, such as Ontario provincial health administrative databases that are housed at the Institute of Clinical Evaluative Sciences and United States national health survey data that are available through the Centers for Disease Control and Prevention. He is a member of the Ontario COPD Population Health Network (COPD OPHN), which is a group of academic respirologists from various universities across Ontario who are working collaboratively on health services and health outcomes research relating to COPD.

Recent Publications

  1. Vozoris, NT, Yao, Z, Li, P, Austin, PC, Stephenson, AL, Gill, SS et al.. Prescription Synthetic Oral Cannabinoid use Among Older Adults with Chronic Obstructive Pulmonary Disease: A Population-Based Cohort Study. Drugs Aging. 2019; :. doi: 10.1007/s40266-019-00707-3. PubMed PMID:31552597 .
  2. Kendzerska, T, Aaron, SD, To, T, Licskai, C, Stanbrook, M, Vozoris, NT et al.. Effectiveness and Safety of Inhaled Corticosteroids in Older Individuals with Chronic Obstructive Pulmonary Disease and/or Asthma. A Population Study. Ann Am Thorac Soc. 2019;16 (10):1252-1262. doi: 10.1513/AnnalsATS.201902-126OC. PubMed PMID:31298938 .
  3. Vozoris, NT. Benzodiazepine and opioid co-usage in the US population, 1999-2014: an exploratory analysis. Sleep. 2019;42 (4):. doi: 10.1093/sleep/zsy264. PubMed PMID:30657987 .
  4. Vozoris, NT, Austin, PC, Rochon, PA. Statistical compared to clinical significance and the risk of misattribution. Eur. Respir. J. 2018;52 (5):. doi: 10.1183/13993003.01868-2018. PubMed PMID:30498054 .
  5. Vozoris, NT, Wang, X, Austin, PC, Stephenson, AL, O'Donnell, DE, Gershon, AS et al.. Serotonergic antidepressant use and morbidity and mortality among older adults with COPD. Eur. Respir. J. 2018;52 (1):. doi: 10.1183/13993003.00475-2018. PubMed PMID:29946006 .
  6. Vozoris, NT. Opioids, Chronic Obstructive Pulmonary Disease, and Hyperbole. J Palliat Med. 2018;21 (6):745. doi: 10.1089/jpm.2018.0090. PubMed PMID:29889015 .
  7. Chien, K, Seemangal, J, Batt, J, Vozoris, NT. Abdominal tuberculosis: a descriptive case series of the experience in a Canadian tuberculosis clinic. Int. J. Tuberc. Lung Dis. 2018;22 (6):681-685. doi: 10.5588/ijtld.17.0685. PubMed PMID:29862954 .
  8. Vozoris, NT, Wang, X, Austin, PC, O'Donnell, DE, Aaron, SD, To, TM et al.. Incident diuretic drug use and adverse respiratory events among older adults with chronic obstructive pulmonary disease. Br J Clin Pharmacol. 2018;84 (3):579-589. doi: 10.1111/bcp.13465. PubMed PMID:29139564 PubMed Central PMC5809361.
  9. Vozoris, NT, Wang, X, Austin, PC, Lee, DS, Stephenson, AL, O'Donnell, DE et al.. Adverse cardiac events associated with incident opioid drug use among older adults with COPD. Eur. J. Clin. Pharmacol. 2017;73 (10):1287-1295. doi: 10.1007/s00228-017-2278-3. PubMed PMID:28664359 .
  10. Vozoris, NT. Prescription opioid use in advanced COPD: benefits, perils and controversies. Eur. Respir. J. 2017;49 (6):. doi: 10.1183/13993003.00479-2017. PubMed PMID:28642313 .
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Affiliations & Other Activities

  • Staff Respirologist and Clinician Investigator, Division of Respirology, Department of Medicine, St. Michael’s Hospital
  • Assistant Professor, Division of Respirology, Department of Medicine, University of Toronto