Table 2.
Test and retest reliability of the BACS among 38 patients with schizophrenia
| Subtest of the BACS | Test session 1
|
Test session 2
|
Correlation
|
Paired t-test
|
||||
|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | ICC | P-value | t | P-value | |
| Verbal memory | 28.47 | 10.54 | 29.63 | 10.39 | 0.735 | <0.001* | −0.937 | 0.355 |
| Working memory | 16.71 | 4.69 | 17.37 | 5.13 | 0.673 | <0.001* | −1.020 | 0.314 |
| Motor speed | 56.95 | 11.23 | 58.21 | 15.68 | 0.699 | <0.001* | −0.694 | 0.492 |
| Verbal fluency | 24.95 | 7.30 | 26.08 | 7.64 | 0.592 | <0.001* | −1.033 | 0.308 |
| Attention and processing speed | 42.03 | 11.32 | 41.21 | 11.56 | 0.862 | <0.001* | 0.837 | 0.408 |
| Executive function | 13.55 | 5.30 | 13.61 | 6.25 | 0.720 | <0.001* | −0.074 | 0.942 |
Note:
*
P<0.001.
Abbreviations: BACS, Brief Assessment of Cognition in Schizophrenia; ICC, intraclass correlations; SD, standard deviation.