The Hokkaido University Center for Environmental and Health Sciences will hold the 3rd CEHS Public Seminar of 2025, "Similarities and Differences between WQS and Qgcomp," on July 7th.

WQS and Qgcomp are widely used as representative methods for estimating the effects of combined exposures. Both methods are regression-based and have been applied to the analysis of many real data. A great deal of research has been conducted on the consideration of the differences in analytical results and comparisons in numerical experiments, but there has been little research on the differences between the two methods from a statistical perspective. Therefore, in this presentation, we will focus in particular on the regression equations of the two methods and discuss in detail the similarities and differences between them.

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