Table 1.
Mean (standard deviation) of variables
| Variable | BDI-II Severity Groups | p-value* | |||
|---|---|---|---|---|---|
|
| |||||
| Minimal (n = 637) |
Mild (n = 89) | Moderate (n = 61) |
Severe (n = 27) | ||
| Agea | 41.3 (10.00) | 39.0 (9.33) | 38.5 (8.72) | 36.5 (8.06) | |
| Educationa | 14.45 (2.66) | 14.16 (2.33) | 13.89 (3.13) | 13.04 (2.77) | |
| SDMT1 | 50.76 (11.54) | 49.35 (11.96) | 45.16 (10.71) | 47.07 (10.63) | < .0005 |
| TMT-B2 | 66.89 (31.31) | 72.03 (45.67) | 79.64 (41.50) | 82.70 (47.00) | < .005 |
| HVLT-IR3 | 26.37 (4.93) | 26.19 (5.51) | 24.85 (5.59) | 24.00 (5.00) | < .05 |
| Stroop4 | 44.89 (9.93) | 44.12 (10.52) | 42.13 (12.01) | 41.15 (11.43) | < .05 |
| TMT-A5 | 27.60 (11.08) | 27.54 (9.90) | 30.88 (15.11) | 28.44 (10.32) | ns |
| HVLT-DR6 | 9.51 (2.27) | 9.57 (2.35) | 8.92 (2.70) | 8.59 (2.42) | ns |
1
Symbol Digit Modalities Test,
2
Trail Making Test-B,
3
Hopkins Verbal Learning Test-Revised Immediate Recall,
4
Stroop Interference,
5
Trail Making Test-A,
6
Hopkins Verbal Learning Test-Revised Delayed Recall
*
p-values reported for omnibus F test, see text for df
a
= Values given in years