Table 1.
Demographic and clinic characteristics
| HC (n = 26) | rMDD (n = 34) | aMDD (n = 17) | |
|---|---|---|---|
| Mean age*, years (S.D.) | 21.15 (1.49) | 21.06 (1.54) | 22.35 (1.80) |
| Females, n (%) | 14 (54) | 25 (74) | 11 (65) |
| Caucasian, n (%) | 19 (76) | 25 (74) | 6 (67) |
| Mean education, years (S.D.) | 14.84 (1.14) | 14.41 (1.39) | 14.69 (1.40) |
| Mean IQ estimate (S.D.) | 106.9 (9.7) | 108.4 (9.8) | 110.5 (9.3) |
| Mean HAM-D* (S.D.) | 0.35 (1.0) | 2.35 (2.82) | 18.65 (3.67) |
| History of co-morbid substance, n (%) | 2 (8) | 11 (32) | 3 (18) |
| History of co-morbid anxiety*, n (%) | 2 (8) | 12 (35) | 15 (88) |
| Past psychiatric medication*, n (%) | 0 | 21 (62) | 6 (36) |
| Mean number of MDEs* (S.D.) | N.A. | 1.82 (1.21) | 7.20 (8.88) |
| Mean age of first onset, years (S.D.) | N.A. | 15.83 (3.09) | 14.94 (4.02) |
| Site, n | |||
| University of Michigan | 17 | 17 | 10 |
| University of Illinois at Chicago | 9 | 17 | 7 |
HC, Healthy controls; rMDD, remitted major depressive disorder; aMDD, active major depressive disorder; S.D., standard deviation; IQ, intelligence quotient; HAM-D, Hamilton Rating Scale for Depression; MDEs, major depressive episodes; N.A., not applicable;
*
p < 0.05.