Table 2.
The mean ± SD of the BACS for all subjects
| BACS | Mean of raw scorea | Mean of z-scorea,b |
|---|---|---|
| Verbal memory | ||
| Sz | 30.2 ± 12.4 | −1.67 ± 1.28 |
| Comp | 46.2 ± 9.8 | −0.1 ± 1.0 |
| Working memory | ||
| Sz | 15.3 ± 4.4 | −1.13 ± 1.05 |
| Comp | 20.0 ± 4.3 | 0.0 ± 1.0 |
| Motor speed | ||
| Sz | 68.5 ± 17.5 | −2.47 ± 1.82 |
| Comp | 91.9 ± 9.8 | 0.0 ± 1.0 |
| Attention | ||
| Sz | 45.5 ± 13.9 | −2.11 ± 1.32 |
| Comp | 67.4 ± 10.5 | 0.0 ± 1.0 |
| Verbal fluency | ||
| Sz | 34.2 ± 11.7 | −1.19 ± 1.23 |
| Comp | 44.5 ± 8.9 | −0.1 ± 0.9 |
| Executive function | ||
| Sz | 15.0 ± 4.5 | −1.17 ± 1.79 |
| Comp | 17.8 ± 2.5 | 0.0 ± 1.0 |
| Composite score | ||
| Sz | – | −1.50 ± 1.02 |
| Comp | – | 0.0 ± 0.6 |
Notes:
a
Mean score ± SD;
b
a composite score was calculated by averaging all z-scores of the six primary tasks from the BACS-J.
Abbreviations: BACS, Brief Assessment of Cognition in Schizophrenia; BACS-J, Japanese language version of the BACS; Comp, comparison group; SD, standard deviation; Sz, schizophrenic group.