Median Mini-Mental State Examination Score by Age and ...
Performance on most mental status and neuro-psychological tests is affected by age and education: false negative examinations are common in those very bright and highly educated, and false positives occur with low educational levels, particularly grade school or less. The AHCPR Guideline on Alzheimer’s diagnosis recommends that confounding factors such as age and educational level be considered in interpretation of mental status test scores. The following table provides median MMSE scores by age and educational level.
|Age |Education | | | | |
| |0-4y |5-8y |9-12y |>=12y |Total |
|18-24 |23 |28 |29 |30 |29 |
|25-29 |23 |27 |29 |30 |29 |
|30-34 |25 |26 |29 |30 |29 |
|35-39 |26 |27 |29 |30 |29 |
|40-44 |23 |27 |29 |30 |29 |
|45-49 |23 |27 |29 |30 |29 |
|50-54 |23 |27 |29 |29 |29 |
|55-59 |22 |27 |29 |29 |29 |
|60-64 |22 |27 |28 |29 |28 |
|65-69 |22 |28 |28 |29 |28 |
|70-74 |21 |26 |28 |29 |27 |
|75-79 |21 |26 |27 |28 |26 |
|80-84 |19 |25 |26 |28 |25 |
|>=85 |20 |24 |26 |28 |25 |
|Total |22 |26 |29 |29 |29 |
Source: Adapted from Crum RM, Anthony JC, Bassett SS, et al. Population-based norms for the mini-mental state examination by age and educational level. JAMA 1993;269:2386-91. Copyright 1993, American Medical Association.
The larger the difference between the patient’s score and the age/education associated median, the more likely significant cognitive impairment exists.
Modified
Hachinski
Ischemic
Score:
Geriatric A score of 6 or more suspicious for depression. False positives in
Depression dementia may result as Alzheimer’s disease as complaints of
Scale, memory, sleep disturbance, apathy, and increased dependence are
Short Form shared by depression and early AD. False negatives may also be
more common in AD patients, where self-monitoring is impaired. Optimal detection of depression requires both the patient and an informant be questioned on depressive symptoms.
-----------------------
• This tool crudely quantifies elements of the history and examination relevant to the risk of vascular dementia.
• When present, each of the following clinical features will add 2 points: abrupt onset, history of stroke, focal neurological signs, focal neurological symptoms.
• Each of these clinical features adds one point: stepwise deterioration, somatic complaints, emotional incontinence, history or presence of hypertension.
• The higher the score, the greater the risk of vascular dementia. A total score of four or more was used by Rosen as the cut point in the validation studies.
Ref. Rosen WG, Terry RD, Fuld PA, et al. Pathologic verification of ischemic score in differentiation of Dementias. Ann Neurol 1980:7:487.
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