Fig. 2

Item logit location: Item logit location (with 95% confidence intervals) and item hierarchy of difficulty of the older acute geriatric sample with dementia or cognitive impairment and the original older acute geriatric sample DEMMI data [11]. Item #4 (sit unsupported for 10 s) and #10 (tandem standing eyes closed) excluded from the dementia analysis. A high positive logit location (e.g. standing on toes) indicates harder item difficulty compared to a negative logit location (e.g. roll). Deviation from the original hierarchy is indicated by non-overlapping 95% confidence bands