1. Armitage P, Berry G (1994) Statistical Methods in Medical Research. 3rd edn. Oxford: Blackwell Science
2. Canadian Institute for Health Information (2006) Waiting for Health Care in Canada: What we Know and What We don't know. Ottawa, March. 2006. ISBN: 1-55392-784-2
3. Legendre P, Legendre L (1998) Numerical Ecology. Amsterdam, Netherlands: Elsevier
4. Manly B (1986) Multivariate Statistical Methods, a Primer. New York: Chapman & Hall
5. Rayson D, Chiasson R, Dewar R (2004) Elapsed time from breast cancer detection to first adjuvant therapy in a Canadian province 1999–2000. CMAJ 170(6): 957–961