Statistical means to enhance the comparability of data within a pooled analysis of individual data in neurobehavioral toxicology

► The comparability of data can be furthered a posteriori. ► Data confounded by study-level covariates can be appropriately used in an IPD-study. ► The z-normalization allows a closer investigation of the exposure-effect relationship. ► A standardized protocol is required for the measurement of the biomarker MnB.