Table 1.
Clinical and demographic characteristics.
| Characteristic | Control subjects |
Patients |
Significance |
|||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | t/Χ2 | p | |
| Age (years) | 33.4 | 8.0 | 36.3 | 7.4 | 1.2 | 0.230 |
| Gender (% male) | 90.0 | 90.0 | 0.0 | 1.000 | ||
| Handedness (% right) | 100.0 | 100.0 | 0.0 | 1.000 | ||
| IQ Verbala | 113.4 | 6.3 | 110.4 | 7.1 | 1.4 | 0.157 |
| IQ Fluidb | 112.4 | 14.4 | 99.2 | 15.8 | 2.8 | 0.009 |
| PANSSc score - positive symptoms | 14.9 | 4.5 | ||||
| PANSSc score - negative symptoms | 14.1 | 6.1 | ||||
| Time since diagnosis (years) | 13.6 | 5.4 | ||||
| Time on medication (years) | 12.4 | 4.7 | ||||
a
Verbal IQ measured using the National Adult Reading Test (Nelson, 1982).
b
Fluid IQ measured using Raven's Advanced Progressive Matrices (Hamel and Schmittmann, 2006).
c
Positive and Negative Symptoms Scale (Kay et al., 1987).