Table 2 Summary of test components of the EPIC-COG battery and the number of participants who successfully attempting all or part of each component
Cognitive test | Cognitive domain | Outcome measure* (Maximum possible test score) | Number of participants attempted/completed test component |
|---|---|---|---|
Short form-extended mental state exam (SF-EMSE) | Global measure of cognition from MMSE to asses domains for retrospective memory (immediate and delayed), attention and calculation, registration, verbal registration, language (object naming/sentence), visual and constructional skills, praxis. Added items for Memory (extension on retrospective memory), praxis, verbal fluency (animal naming), language (writing to dictation) and abstract thinking. | SF-EMSE Score (37) | 98% (8483) |
Letter cancellation task | Executive function - (covering visual search, attention, mental and processing speed) | Accurately identified target letters in one minute (72) | 97.5% (8410) |
Hopkins verbal learning test (HVLT) | Recognition/learning and episodic memory | Total HVLT Score - Total of correctly identified target words over 3 trials (36) | 93.7% (8081) |
CANTAB®-paired associate learning (CANTAB-PAL) | Episodic memory and new learning/Visuospatial | First Trial Memory Score (26) | 86.5% (7281) |
Visual sensitivity test (VST) | Visuospatial (magnocellular pathway) | Reaction Time in milliseconds | 83% (7144) |
National adult reading test (NART) | Proxy Measure of IQ - Pre-morbid Intelligence | Short NART Error Score - Using the short-NART algorithm (50) | 94.1% (8112) |
Time and event based task | Prospective memory | Success vs Failure | 97% (8403) |