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Neurol India. 2018 Nov-Dec;66(6):1644-1648. doi: 10.4103/0028-3886.246242.

A new scoring system and norms for, and the performance of cognitively-unimpaired older adults on the cube copying test.

Author information

1
Department of Neurology, Pushpagiri Institute for Medical Sciences, Thiruvalla, Kerala, India.
2
Department of Psychology, UC College, Aluva, Kerala, India.
3
Department of Neurology, National Institute for Mental Health and Neurosciences, Bengaluru, Karnataka, India.

Abstract

Background:

Cube copying test is often used as screening test for dementia. However, there is a paucity of an effectively scoring system, and very little is known about how healthy older adults perform on this test. In this study, we present a modified scoring system for the wire-cube copying, evaluate the performance of cognitively unimpaired elderly individuals, and generate norms on community-dwelling older adults.

Materials and Methods:

The task consisted of copying a three-dimensional printed cube (i.e., wire-cube) of size 2.5 cm3. The scoring system devised by Maeshma et al. was modified and used. The target population consisted of cognitively normal individuals aged ≥65 years living in a predefined geographical area.

Results:

In this study, there were 511 participants (62% females) aged 69 ± 7.2 years. Of the 295 figures available, 51 were rejected. Among the candidates with acceptable cubes, 182 (74.5%) had ≥9 years of education. Of the 51 rejected cubes, 37 (72.5%) participants had <9 years of education. Education was found to be significantly correlated with composite score (P < 0.001) whereas age and sex had no correlation. The total score as well as subgroup scores of the cubes were correlating well with Mini-mental state examination (MMSE) as well as Addenbrooke's Cognitive Examination (ACE) composite scores (P < 0.0001).

Conclusion:

Good correlation was found between composite scores and subscores with most of the ACE parameters. The test can be used as a rapid screening test for dementia in view of its good correlation with ACE composite scores and subscores; it also has the advantage of being independent of culture and language.

KEYWORDS:

Construction; cube copying; dementia screening

PMID:
30504557
DOI:
10.4103/0028-3886.246242
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