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Demographic and clinical characteristics of all participants.
| Characteristics | MDD (n = 100) | HCs (n = 99) | Statistics (z/χ2) | P-value |
| Age (years) | 27 (13) | 25 (10.5) | 0.282 | 0.778 |
| Sex (male/female) | 34/66 | 41/58 | 1.04 | 0.307 |
| Education (years) | 12 (6) | 13 (3.5) | −1.053 | 0.293 |
| HAMD-17 score | 22 (4) | – | – | – |
| Duration (months) | 5.5 (11) | – | – | – |
Data are represented as median (interquartile range) except for sex. MDD, major depressive disorder; HCs, healthy controls; HAMD, Hamilton depression rating scale.
