Table 3.
Demographic and clinical characteristics of the participants with neuropsychological tests.
| Characteristics | MDD (n = 34) | NC (n = 34) | t/χ2 | P-value |
|---|---|---|---|---|
| Age (years) | 29.41 ± 8.27§ | 30.09 ± 10.88§ | −0.29 | 0.77† |
| Gender (F/M) | 25/9 | 24/10 | 0.07 | 0.787‡ |
| Education (years) | 13.00 ± 3.44§ | 13.68 ± 3.07§ | −0.86 | 0.395† |
| Illness duration (months) | 7.81 ± 8.46§ | NA | NA | NA |
| HDRS-17 | 21.85 ± 2.25§ | NA | NA | NA |
| SIE_time | 1.17 ± 0.37§ | 1.10 ± 0.32§ | −0.95 | 0.35¶ |
| SIE_accuracy | −0.05 ± 0.06§ | −0.03 ± 0.04§ | 1.57 | 0.12¶ |
| Semantic VFT | 18.15 ± 5.77§ | 21.47 ± 4.82§ | 2.44 | 0.02¶ |
| Phonemic VFT | 8.15 ± 4.34§ | 9.91 ± 3.98§ | 1.86 | 0.07¶ |
| SDMT | 53.21 ± 12.28§ | 62.03 ± 14.12§ | 3.40 | 0.00¶ |
MDD, major depressive disorder; NC, normal control; HDRS-17, 17-item hamilton depression rating scale; CTQ, childhood trauma questionnaire; SIE_time, interference effect of time during the Stroop test; SIE_accuracy, interference effect of accuracy during the Stroop test.
§
Mean ± standard deviation (SD).
†
The P-values were obtained by two-sample t-tests.
‡
The P-value was obtained by a chi-squared test.
¶
The P-values were obtained by linear regression analyses. Age, gender, and education level were included as covariates.