Table 2.
Neuropsychological test scores and cognitive domain scores.
| Cognitive Domain | Test | n | Test Score | t-score a |
|---|---|---|---|---|
| Memory | RAVLT delayed recall (nr. of words correct) | 26 | 7.8 ± 3.4 (2–15) | 43.3 ± 11.6 (24–66) |
| VAT A trial 1 (nr. of objects correct) | 26 | 5.6 ± 0.6 (4–6) | 43.7 ± 2.3 (37–45) | |
| Domain z-score b | 26 | 0.00 ± 0.80 (−2.13–1.37) | NA | |
| Attention | TMT A (sec) | 26 | 45 ± 20 (19–116) | 43.6 ± 8.9 (26–58) |
| Digit Span forward (nr. of series correct) | 25 | 13 ± 3 (6–19) | 49.8 ± 17.1 (16–75) | |
| Domain z-score b | 26 | −0.02 ± 0.72 (−2.32–1.08) | NA | |
| Executive functions | Category fluency (nr. of words correct) | 26 | 24 ± 5 (14–32) | 50.7 ± 8.8 (35–69) |
| Stroop Color Word (sec part III / sec part II) | 24 | 1.8 ± 0.4 (1.2–3.2) | 50.0 ± 8.2 (32–67) | |
| Domain z-score b | 26 | 0.00 ± 0.81 (−2.70–1.21) | NA | |
| Visuospatial function | Rey copy (elements correct) | 25 | 33 ± 3.6 (22–36) | 38.6 ± 3.4 (28–40) |
| Domain z-score c | 25 | 0.00 ± 1.00 (−3.03–0.83) | NA | |
| Language | Boston Naming Test (nr. of objects correct) | 23 | 78 ± 7 (67–87) | 47.5 ± 7.8 (36–65) |
| Domain z-score c | 23 | 0.00 ±1.00 (−1.63–1.28) | NA |
Data are mean ± SD and range.a neuropsychological test scores transformed to external normative test scores, adjusted for age, gender, and level of education.b domain z-scores are mean z-scores from two tests of the same domain.c domain z-scores are z-scores from Rey copy or Boston Naming Test, respectively. Abbreviations: RAVLT, Rey Auditory Verbal Learning Test. VAT, Visual Association Test. TMT, Trail Making Test.