Connie Stewart

Dr. Stewart received her PhD in Statistics from Dalhousie University in 2005 and is a Professor in the Department of Mathematics and Statistics at the University of New Brunswick Saint John.

Dr. Stewart’s main research interest is in the area of compositional data analysis, statistical ecology and computational statistics. Her research involves developing new statistical tools for the analysis of diet estimates obtained via quantitative fatty acid signature analysis, an increasingly popular diet estimation method. She collaborates closely with biologists in Atlantic Canada studying the grey seal population. Dr. Stewart has also contributed to several collaborative research projects with health care professionals in the community.

She has held an NSERC discovery grant since 2008 and regularly supervises undergraduate summer research projects. As a member of the Mathematics and Statistics graduate academic unit, she also supervises/co-supervises MSc and PhD graduate students in Statistics.

Dr. Stewart has been invited to present her research at a variety of national and international venues.

Selected publications

Stewart, C., Lang, S.L.C., Iverson, S. and Bowen W. D. (2022) Measuring repeatability of compositional diet estimates: An example using quantitative fatty acid signature analysis. Ecology and Evolution. doi.org/10.1002/ece3.9428.

Bourque, J., Atwood, T., Divoky, G., Stewart, C., McKinney, M. (2020) Fatty acid-based diet estimates suggest ringed seal remain the main prey of southern Beaufort Sea polar bears despite recent use of onshore food resources. Ecology and Evolution, 10(4): 2093-2103. doi.org/10.1002/ece3.6043.

Tsagris, M. and Stewart, C. (2020) A folded model for compositional data analysis. Australian and New Zealand Journal of Statistics, 62(2), 249-277. doi.org/10.1111/anzs.12289.

McCloskey, R., Stewart, C. and Keeping-Burke, L. (2019) Predictors of Success in the NCLEX-RN(r) for Canadian Graduates. Nursing Leadership, 32(4), 30-45. doi.org/10.12927/cjnl.2020.26103.

Tsagris, M. and Stewart, C. (2018) A Dirichlet regression model for compositional data with zeros. [Special Statistics Issue] Lobachevskii Journal of Mathematics, 39(3), 398-412.

Stewart, C. (2017) An approach to measure distance between compositional diet estimates containing essential zeros. Journal of Applied Statistics, 44(7), 1137-1152.

Steeves, H., McMeans, B., Field, C., Stewart, C., Arts, M., Fisk, A., Lydersen, Ch., Kovacs, K and MacNeil, A. (2016) Non-parametric spatio-temporal variability in the fatty-acid profiles among Greenland Sharks. Journal of the Marine Biological Association of the United Kingdom, 98(3), 627-633.

McCloskey, R., Donovan, C., Stewart, C. and Donovan, A. (2015). How Registered Nurses, Licensed Practical Nurses and Resident Aides Spend Time in Nursing Homes: An Observational Study. International Journal of Nursing Studies, 52(9), 1475-1483.

McCloskey, R., Jarrett, P. and Stewart, C. (2015) The Untold Story of Being Designated an Alternative Level of Care Patient. Healthcare Policy, 11(1), 76-84.

McCloskey, R., Jarrett, P., Stewart, C. and Keeping-Burke, L. (2015). Recruitment and Retention Challenges in a Technology-Based Study with Older Adults Discharged from a Geriatric Rehabilitation Unit. Rehabilitation Nursing, 40 (4), 249-259. 10.1002/rnj.149.

Donovan, C., Stewart, C., McCloskey, R. and Donovan, A. (2014). How do residents spend their time in nursing homes? Canadian Nursing Home, 25(3), 13-17.

Stewart, C., Iverson, S. and Field, C. (2014) Testing for a change in diet using fatty acid signatures. Environmental and Ecological Statistics, 21, 775-792.

McCloskey, R. Jarrett, P., Stewart, C., Nicholson, P. and Jacob, C. (2014). Alternate Level of Care Patients in Hospital: What does dementia have to do with this? Canadian Geriatrics Journal, 17(3), 88-94.

Wernham, M., Jarrett, P., Stewart, C., MacDonald, E., MacNeil, D., Hobbs, C. (2014) Comparison of the SIMARD MD to clinical impression in assessing fitness to drive in patients with cognitive impairment. Canadian Geriatrics Journal, 17(2), 63-69.

Stewart, C. (2013) Zero-inflated beta distribution for modeling the proportions in quantitative fatty acid signature analysis. Journal of Applied Statistics, 40(5), 985-992.

Stewart, C. and Field, C. (2011) Managing the Essential Zeros in Quantitative Fatty Acid Signature Analysis. Journal of Agriculture, Biological, and Environmental Statistics, 16(1), 45-69.

McCloskey, R., Jarrett, P., Knudson, C., Quinn, S., and Stewart, C. (2009). Exploring the Role of a Nurse Practitioner in Long-Term Care. Canadian Journal of Geriatrics 12(4), 10-15.

Dupuis, D.J. and Winchester, C. (2001). More on the Four-Parameter Kappa Distribution. Journal of Statistical Computation and Simulation, 71, 99-114.