Table 2.
Demographic, Clinical and Neuropsychological Variables
| Variable | Discriminators (n=60, 35 Male) |
Non discriminators (n = 23, 14 male) |
Controls (n = 47, 23 male) |
Statistic | |||
|---|---|---|---|---|---|---|---|
| Mean | S.D. | Mean | S.D. | Mean | S.D. | ||
| Age (years) | 30.6 | 8.8 | 30.6 | 10.3 | 26.6 | 6.5 | F(2, 127)=3.33* |
| Education (years) | 14.4a | 2.5 | 13.5a | 2.5 | 16.3b | 2.1 | F(2, 127)=13.47*** |
| Handedness (LQ) | 69.9 | 39.1 | 71.8 | 33.3 | 73.7 | 28.7 | F(2, 127)=0.69 |
| Onset Age (years) | 22.1 | 6.8 | 22.1 | 6.7 | t(81)=0.03 | ||
| Illness Duration (years) |
8.5 | 8.2 | 8.5 | 9.6 | t(81)= 0.01 | ||
| Total BPRS | 35.9 | 13.3 | 35.6 | 10.8 | t(70)=0.08 | ||
| PANSS Positive | 15.0 | 7.1 | 14.2 | 5.7 | t(70)=0.43 | ||
| PANSS Negative | 14.3 | 6.0 | 16.6 | 5.9 | t(70)=1.44 | ||
| Letter Number Sequencing (Number Correct) |
10.6a | 3.0 | 8.3b | 2.9 | 12.5c | 2.8 | F(2, 122)=15.44*** |
| CPT -IP (d’) | 1.75a | .99 | .98b | .66 | 2.59c | .81 | F(2, 122)=25.60*** |
Note: LQ = laterality quotient on Edinburgh Inventory; BPRS = Brief Psychiatric Rating Scale; PANSS = Positive and Negative Syndrome Scale; CPT-IP =Continuous Performance Test-Identical Pairs. BPRS, PANSS: n =53 D group, n = 19 ND group. Letter-Number, CPT-IP: n = 59 D group, n = 22 ND group. Means with different superscripts differ significantly at p < .05 using Student Newman-Keuls post hoc comparisons.
*
p<.05
**
p<.01
***
p<.001