This website aims to serve as a hub for online tools helping occupational hygiene practitioners perform risk assessment. The heart of expostats.ca is a bayesian calculation engine allowing to estimate parameters of the distribution of exposure for a worker or groupr of workers. The user enters measurement data and the website performs calculations and returns risk metric estimates as well as uncertainty estimates.

www.expostats.ca is in constant evolution, as new tools are being developped, existing ones are being validated, and new, creative ways to communicate risk are explored. We warmly welcome any questions, suggestions or remarks.


The creation of this website and the tools associated with it was rendered possible by the support of several people who contributed their time, skills, and inspiration. Special thanks to Tracy Kirkham, François Lemay, Daniel Drolet, Lawrence Joseph, Robert Fraser, Pierrot Peppin, Michel Gérin and Denis Bégin.