Fig. 1

Main cognitive test results within 1 year. Scores at baseline (v1) and follow-up after 1 year (v2) for the eight cognitive assessments that have been included in the sum score. Boxes show the 25–75% percentile range with median, and whiskers indicate minimum and maximum. For an easier comparison, we present absolute percentage scores that have been calculated by setting maximum sores as described in the Methods section. *p < 0.05, significant changes within 1 year, calculated via paired t tests. lvPPA logopenic variant primary progressive aphasia, nfvPPA nonfluent variant primary progressive aphasia, PPA primary progressive aphasia, svPPA semantic variant primary progressive aphasia