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) |
*Frequencies for only one outcome measure given in this summary table.