Table 1.
Demographic and clinical information of subjects.
| Mean ± SD | MDD | HC | P-value |
|---|---|---|---|
| Number | 182 | 218 | NA |
| Age | 32.0 ± 10.3 | 29.5 ± 8.3 | 0.0069 |
| Gender(M/F) | 63/119 | 76/142 | 0.96 |
| SYMPTOM SEVERITY | |||
| HDRS | 21.9 ± 5.0 | NA | NA |
| BDI | 21.0 ± 7.1 | NA | NA |
| COGNITIVE PERFORMANCE | |||
| RVP | 16.8 ± 5.4 | 18.3 ± 5.6 | 0.07 |
| SWM | 33.5 ± 5.7 | 33.3 ± 4.6 | 0.77 |
| IED | 23.5 ± 12.6 | 22.9 ± 12.4 | 0.77 |
P denotes the significance value of two sample t-test performed between healthy controls (HC) and major depressive disorder (MDD) patients for all measures, except gender (used chi-squared test). SD, standard deviation HDRS, Hamilton Depression Scale BDI, Beck Depression Rating Scale RVP, Rapid Visual Information Processing SWM, Spatial Working Memory IED, Intra-Extra Dimensional Set Shift F, female M, male NA, not applicable.