Table 3.
Participant Characteristics, Neuropsychological Variables, and Predictors in Study 2
| Measure | r-MDD (n = 37) M (SD) |
HC (n = 23) M (SD) |
t | p |
|---|---|---|---|---|
| Gender (% female) | 70.3 | 52.2 | χ2 = 2.00 | 0.16 |
| Age | 21.19 (1.79) | 21.34 (1.82) | 0.33 | 0.74 |
| Education | 14.30 (1.58) | 14.83 (1.53) | 1.28 | 0.21 |
| Verbal IQa | 104.29 (9.01) | 102.82 (9.37) | −0.59 | 0.56 |
| HAM-D | 2.62 (2.94) | 0.43 (1.04) | −4.13* | <0.001 |
| HAM-A | 2.92 (3.02) | 0.83 (1.80) | −3.36* | 0.001 |
| No. of Depressive Episodesa | 2.24 (2.11) | 0.00 (0.00) | −6.11* | <0.001 |
| BAS-RR b | 16.85 (2.24) | 16.94 (1.89) | 0.14 | 0.89 |
| BIS b | 20.12 (3.37) | 19.71 (2.47) | −0.45 | 0.66 |
| BAS-D b | 10.62 (2.00) | 10.82 (1.47) | 0.38 | 0.71 |
| Go Target Reaction Time (ms) a | 443.82 (38.97) | 427.62 (31.76) | −1.57 | 0.12 |
| Go Target Accuracy (%) a | 0.96 (0.04) | 0.98 (0.03) | 1.36 | 0.18 |
| Digit Symbol (scaled) a | 10.92 (1.98) | 10.90 (2.95) | −0.03 | 0.98 |
| Purdue Pegboard (Dominant hand)a | 14.95 (1.76) | 15.25 (1.74) | 0.62 | 0.54 |
Levene’s test indicated equal variances not assumed.
Missing up to 4 participants per group.
Sample size reduced because not all participants completed the BIS/BAS (rMDD = 34, HC = 17)