Wastewater-based estimates of cannabis and drug use in Canada: Analytical methods and supplementary information

This document is a supplement to The Daily article, Wastewater-based estimates of cannabis and drug use in Canada: Pilot-Test Results (citation). It describes the data analysis supporting the results of the article, including the statistical testing and the treatment of outliers and missing data. Additionally, for each of the parameters required to estimate drug consumption, the document provides the values and uncertainty that were used and references to the literature supporting those values.