Fig 1. Genetic principal component analyses of individuals used in the aggregate-data study to investigate the relationship between the type of Native American ancestry and disease-specific mortality risks (panels A-D), and scatter plots of estimated Native American proportions using different reference individuals as surrogates of Native American ancestry: 9 Mapuche and 9 Aymara reference individuals versus samples from the Americans in the Human Genome Diversity Project, supervised ADMIXTURE analysis (panel E) and unsupervised ADMIXTURE analysis with four ancestral populations (panel F).