Shorter Version of the Brain Assessment Is Suitable for Longitudinal Public Cognitive Evaluations.

INTRODUCTION
We have developed an online cognitive test (Brain Assessment [BA]) which exhibits moderate correlations with established neuropsychological tests. We made a short version of the BA that requires only 10 min and investigated correlations with the original version.


PARTICIPANTS AND METHODS
Three hundred and twenty-three subjects (26-82 years old, mean age 41.9 years) were recruited via the internet and performed the original version of the BA online, and, for the analyses of the original and short version, the results of the whole and of the first 2 min were utilized, respectively. Correlations were evaluated between both versions, and 144 subjects agreed to be interviewed about BA utilization.


RESULTS
Correlations between the short and original versions of the BA were strong (memory of numbers, r = 0.72: total, r = 0.73) or moderate (memory of words, r = 0.66; visuospatial, r = 0.42; working memory, r = 0.53; judgment, r = 0.54). We found a strong negative correlation between the "memory of words" subtest and age (short version, r = -0.85; original version, r = -0.88). Regarding the interview, most wanted to be assessed by the short version every year. In the case of a concerning score, they would then want to be examined by the original version of the BA and/or more specific neuropsychological tests.


DISCUSSION
We found that the short and the original versions of the BA exhibited strong correlations, and the correlation coefficients between age and subtest scores were almost the same between the two versions.


CONCLUSION
The short version of the BA will be useful to perform cognitive assessments in the clinic.