Test-retest norms and reliable change indices for the MicroCog Battery in a healthy community population over 50 years of age.

Full Abstract

The increasing availability of computerized test batteries used to assess neuropsychological changes requires the availability of suitable test-retest normative data. Reliable change indices can then be used to evaluate significance of change in an individual's performance on retesting. We tested (N = 40) neurologically normal adults on three occasions (initially, two weeks, and three months) on the MicroCog:
Assessment of Cognitive Functioning computerized testing instrument. Normative retest data are presented for two analytic techniques:
the Reliable Change Index adjusted for practice and the Standardized Regression-Based technique. At two weeks, the correlation coefficients ranged from .49 to .84, with all scores demonstrating significant practice effects. At 3 months, coefficients ranged from .50 to .83, with all scores except Attention / Mental Control demonstrating significant practice compared to baseline. Regression equations were generated for all scores using age, sex, education level, and score at Time 1 as predictors. For all measures the only significant predictor was the Time 1 score. The reliable change indices and regression equations presented here can be used to determine the significance of change from predicted retest scores in a matched interventional cohort.

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Author information

Author/s: Raymond, Paul D (PD); Hinton-Bayre, Anton D (AD); Radel, Michael (M); Ray, Michael J (MJ); Marsh, Neville A (NA);

Affiliation: Queensland University of Technology, School of Life Sciences, Brisbane, QLD, Australia. p.raymond(-atsign-)tpg.com.au

Journal and publication information

Publication Type: Comparative Study; Journal Article

Journal: The Clinical neuropsychologist (Clin Neuropsychol), published in Netherlands. (Language: eng)

Reference: 2006-Jun; vol 20 (issue 2) : pp 261-70

Dates: Created 2006/05/12; Completed 2006/07/26; Revised 2007/06/01;

PMID: 16690546, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Aged
Aged, 80 and over
Cognition - physiology
Confidence Intervals
Female
Humans
Male

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