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Predicted threshold locations for mobility (N=293) and cognition (N=373) identified from vignettes (HOPIT model 1) and from objective measures (HOPIT model 2): (a): mobility – difficulty in moving around; (b) mobility – difficulty in vigorous activity; (c) cognition – difficulty with memory; (d) cognition – difficulty with learning. Y-axis is standardized to SD units of vignette severity level 5 identified from HOPIT model 1 to allow comparison of perceived threshold locations.
