Dr. Laura Cowen is an Associate Professor in the Department of Mathematics and Statistics specializing in mark-recapture theory and applications. Specifically she is interested in the effects of tag loss and how to incorporate tag loss rates into mark-recapture models. Laura has collaborated with researchers studying Victoria’s injection drug user sharing behavior and is working on a project to obtain estimates of the population size of Victoria’s injection drug users using mark-recapture methods. Dr. Laura Cowen is an affiliate with the Centre for Studies in Demography and Ecology, University of Washington.


Laura Cowen’s main current research interests are:

  • Tag loss in mark-recapture experiments
  • Estimating the size of Victoria's injection drug user population
  • Goodness of fit in closed-population mark-recapture models
  • Sharing behaviour of injection drug users
  • Statistical ecology

Selected Publications:

  • Exner, H., E.K. Gibson, R. Stone, J. Lindquist, L. Cowen, and E.A. Roth. 2010. "Injection equipment sharing and injection practices among clientele of needle exchange program in Victoria, British Columbia." Drug Alcohol Review, 1-6. DOI: 10.1111/j.1465-3362.2010.00219.x.
  • Exner, H., E.K. Gibson, R. Stone, J. Lindquist, L. Cowen, and E.A. Roth, 2009. "Worry as a window into the lives of people who use injection drugs: A factor analysis approach." Harm Reduction J. 6-20.
  • Cowen, L. and C.J. Schwarz, 2006. "The Jolly-Seber model with tag loss." Biometrics 62, 699-705.

Contact Information:

E-mail: lcowen@uvic.ca
Home page: http://www.math.uvic.ca/~lcowen