Regression-based normative data and equivalent scores for Trail Making Test (TMT): an updated Italian normative study

The results suggested that i) changes in the level of the construct measured by the Montreal Cognitive Assessment yield statistically equivalent changes in all MoCA forms versions scores the reliability of the MoCA versions is statistically equivalent some idiosyncratic characteristic to each MoCA version yields non-equivalent mean manifest test scores

Mattia Siciliano; Carlo Chiorri; Valeria Battini; Valeria Sant’Elia; Manuela Altieri; Luigi Trojano; Gabriella Santangelo

2018

Scholarcy highlights

  • The Montreal Cognitive Assessment is a 10-minute screening test developed to assist physicians in detecting cognitive impairment in a wide array of diseases
  • The results suggested that i) changes in the level of the construct measured by the MoCA yield statistically equivalent changes in all MoCA versions scores; ii) the reliability of the MoCA versions is statistically equivalent; iii) some idiosyncratic characteristic to each MoCA version yields non-equivalent mean manifest test scores
  • The differences between MoCA forms arose mainly in verbal abstraction, copying of figure, and repetition of sentence tasks. These findings are consistent with the following Lebedeva et al.’s observations on English alternate forms : i) the abstraction items of MoCA 1 were more difficult than the respective alternate items in MoCA 2 and 3; ii) the model to be copied was easier in MoCA 3 than in MoCA 1 and 2
  • Our findings were not consistent with Lebedeva et al with respect to sentence repetition, as we found that the sentences used in MoCA 3 were easier to repeat than those included in MoCA 1 and 2
  • As in previous normative studies for MoCA 1, we found a significant effect of age and education, but not of sex, for both MoCA 2 and 3 total scores
  • The use of memory domain score seems to be impeded in MoCA 2 and 3 because of the presence of a negative cut-off, to what observed for Italian MoCA 1
  • M, Mean; SD, Standard Deviation; Mdn, Median; *expressed as raw score; MoCA forms, Montreal Cognitive Assessment; Mini-Mental State Examination, Mini Mental State Examination

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