Two hundred forty-one nursing home patients from the National Nursing
Home Survey Pretest were assessed using the Ischemic Score of Hachinski.
Medical chart diagnoses were used to classify those with and without
dementia. The Mini-Mental State Examination was used to assess the accuracy
of the medical-chart diagnoses of dementia. The Ischemic Score failed to
differentiate multi-infarct dementia from other types of dementias.
Instead, the difference between the two dementia groups was in the
direction opposite that predicted by Hachinski.