The calculator is valid for persons with age between 70-90 years. If the actual age of the tested person deviate from this the nearest value can be considered.
The z-score representing the discrepancy from mean in number of standard deviations, shows how the score of the tested person deviates from the normal (average) score of a person at the same age, sex and educational level.
The percentile is the proportion of the population at same age, sex and education that has equal or lower score on MoCA.
Engedal, Knut et al. ‘The Montreal Cognitive Assessment: Normative Data from a Large, Population-Based Sample of Cognitive Healthy Older Adults in Norway—The HUNT Study’. 1 Jan. 2022 : 589 – 599.