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The Montreal Cognitive Assessment: Creating a Crosswalk with the Mini‐Mental State Examination
Author(s) -
Saczynski Jane S.,
Inouye Sharon K.,
Guess Jamey,
Jones Richard N.,
Fong Tamara G.,
Nemeth Emese,
Hodara Ariel,
Ngo Long,
Marcantonio Edward R.
Publication year - 2015
Publication title -
journal of the american geriatrics society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.992
H-Index - 232
eISSN - 1532-5415
pISSN - 0002-8614
DOI - 10.1111/jgs.13710
Subject(s) - equating , percentile , montreal cognitive assessment , medicine , cognitive impairment , dementia , mini–mental state examination , cognition , observational study , physical therapy , psychiatry , statistics , mathematics , disease , rasch model
Objectives To establish Montreal Cognitive Assessment (Mo CA ) scores that correspond to well‐established cut‐points on the Mini‐Mental State Examination ( MMSE ). Design Cross‐sectional observational study. Setting General medical service of a large teaching hospital. Participants Individuals aged 75 and older (N = 199; mean age 84, 63% female). Measurements The Mo CA (range 0–30) and the MMSE (range 0–30) were administered within 2 hours of each other. The Abbreviated Mo CA (A‐Mo CA ; range 0–22) was calculated from the full Mo CA . Scores from the three tests were analyzed using equipercentile equating, a statistical method for determining comparable scores on different tests of a similar construct by estimating percentile equivalents. Results Mo CA scores were lower (mean 19.3 ± 5.8) than MMSE scored (mean 24.1 ± 6.6). Traditional MMSE cut‐points of 27 for mild cognitive impairment and 23 for dementia corresponded to Mo CA scores of 23 and 17, respectively. Conclusion Scores on the full and abbreviated versions of the Mo CA can be linked directly to the MMSE . The Mo CA may be more sensitive to changes in cognitive performance at higher levels of functioning.