The study revealed strong ( R = 0.94, p < 0.001) test-retest reliability of the total BOCA score one week after participants’ initial administration. BOCA demonstrated strong correlation with Montreal Cognitive Assessment (MoCA) ( R = 0.90, p < 0.001). The Cronbach’s alpha was 0.87 implying good internal consistency. Test scores were significantly different between patients and controls ( p < 0.001) suggesting good discriminative ability. BOCA was administered to patients with cognitive impairment ( n = 50) and age- and education-matched controls ( n = 50). BOCA evaluates eight cognitive domains: 1) Memory/Immediate Recall, 2) Combinatorial Language Comprehension/Prefrontal Synthesis, 3) Visuospatial Reasoning/Mental rotation, 4) Executive function/Clock Test, 5) Attention, 6) Mental math, 7) Orientation, and 8) Memory/Delayed Recall. BOCA uses randomly selected non-repeating tasks to minimize practice effects. The goal of this project was to validate BOCA. We developed a self-administered 10-min at-home test intended for longitudinal cognitive monitoring, Boston Cognitive Assessment or BOCA.
Longitudinal cognitive testing is essential for developing novel preventive interventions for dementia and Alzheimer’s disease however, the few available tools have significant practice effect and depend on an external evaluator.
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