This file consists in the complete dataset of antero-posterior (AP) and transverse (TR) diameters measured on the vertebral neural canal (VNC) of the tenth thoracic to the fifth lumbar vertebrae of contemporary individuals from the Subadult Virtual Anthropology Database (SVAD) aged between birth and 20 years from Colombia (dry bone data), France, the Netherlands, Taiwan, and the United States (vertebral surfaces segmented from computed tomography scans). The dataset includes AP and TR diameters, age in years and days, biological sex, country of origin, numerical values of country-level and state-level Human Developmental Indices (HDI), numerical Gini index (country-level of inequality), categorical HDI levels, categorical Gini levels, life history stage, manner of death, and cause of death when applicable. The US individuals originate from the New Mexico Decedent Image Database (NMDID) where the original demogrpahic data and CT scans can be downloaded from. CT scans for individuals from France, the Netherlands, and Taiwan are not openly available for other research.