التفاصيل البيبلوغرافية
| العنوان: |
Normative Data that Does Not Exclude Participants with Mild Cognitive Impairment Results in Lower Than Expected Memory Impairment Rates, Particularly in Females. |
| المؤلفون: |
Stricker, N (AUTHOR), Lundt, E (AUTHOR), Christianson, T (AUTHOR), Machulda, M (AUTHOR), Kremers, W (AUTHOR), Fields, J (AUTHOR), Mielke, M (AUTHOR), Knopman, D (AUTHOR), Petersen, R (AUTHOR) |
| المصدر: |
Archives of Clinical Neuropsychology. Aug2019, Vol. 34 Issue 6, p848-848. 1p. |
| مصطلحات موضوعية: |
*MILD cognitive impairment, *VERBAL learning, *DISABILITIES, *GAUSSIAN distribution, *AUDITORY learning, *FEMALES |
| مصطلحات جغرافية: |
MINNESOTA |
| مستخلص: |
Objective Mayo's Older Adult Normative Studies (MOANS) have served as an important resource for clinicians for three decades. Data collection was completed prior to the development and widespread use of Mild Cognitive Impairment (MCI) as a construct. Therefore, a portion of individuals included in the MOANS normative studies likely had undetected cognitive impairment. Method The Mayo Clinic Study of Aging (MCSA) is a population-based study of cognitive aging among Olmsted County, Minnesota, residents that began in October 2004. We applied age-adjusted MOANS norms (Ivnik et al. 1992) for the Auditory Verbal Learning Test (AVLT) long delay recall to cognitively unimpaired participants age 56 or older in the MCSA (N = 3,603). We used 1-sample tests of proportions comparing observed impairment rates to impairment rates expected based on a normal distribution of performance. Results Results showed that a significantly lower than expected number of participants demonstrated impaired delayed recall based on MOANS norms (all p's <.001). Using a lenient cut-off (< -1 SD), only 7.3% of participants demonstrated impaired performance (vs. 15.9% expected), and this was more pronounced for females (3.5% impaired) relative to males (11.1% impaired). Further, only 0.6% of participants demonstrated impaired performance at a cut-off of < -2 SD, and no participants aged 80-91 reached this cut-off (2.3% expected). Conclusions Results suggest that the sensitivity of the original MOANS norms is lowered by likely inclusion of individuals with MCI, particularly in females. Updated normative data for the AVLT that exclude individuals with MCI and adjust for sex are needed. [ABSTRACT FROM AUTHOR] |
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