Table 2.
N-Back Task Performance
N-back | Accuracy % mean ± SD (n) | Cohen's d, P | |||
---|---|---|---|---|---|
| |||||
COS | SIB | C | COS vs. C | SIB vs.C | |
1-back | 64.2 ± 30.0 (30) | 87.0 ± 23.8 (30) | 89.2 ± 21.5 (39) | 1.0, <0.001 | 0.1, 0.945 |
2-back | 56.8 ± 23.0 (12) | 74.7 ± 24.4 (29) | 84.9 ± 19.6 (39) | 1.3, <0.001 | 0.5, 0.161 |
Note. Only patients who completed scanning were included in analyses. Groups were compared using Welch two-sample t tests, and effects were measured by Cohen’s d. BOLD = blood oxygen level-dependent; C = controls; COS = childhood-onset schizophrenia; SIB = siblings.