Table 1.
Schizophrenia Sample Demographics
| Characteristic | HCS (N = 90) | SCZ (N = 90) | Significance (SCZ vs CON) | |
|---|---|---|---|---|
| M (SD) | M (SD) | T Value/Chi-Square | P Values, 2 Tail | |
| Age (y) | 30.71 (11.99) | 32.93 (11.25) | 1.28 | .2 |
| Gender (% male) | 66.00 | 73.00 | 1.13 | .26 |
| Father’s education (y) | 14.37 (3.21) | 13.67 (3.47) | 1.42 | .16 |
| Mother’s education (y) | 13.99 (2.81) | 13.50 (2.92) | 1.15 | .25 |
| Participant’s education (y) | 15.24 (2.22) | 13.18 (2.21) | 6.26* | <.001 |
| Handedness (% right) | 84.21 | 80.00 | 0.85 | .4 |
| Signal to noise | 215.37 (45.25) | 206.81 (62.05) | 1.06 | .3 |
| % Frames flagged | 10.13 (7.89) | 17.63 (17.00) | 3.79* | <.001 |
| IQ estimate | 106.77 (8.92) | 97.78 (15.71) | 4.55* | <.001 |
| Medication (CPZ equivalents) | — | 229.00 (195.81) | — | — |
| PANSS positive symptoms | — | 15.80 (4.73) | — | — |
| PANSS negative symptoms | — | 14.34 (5.53) | — | — |
| PANSS general psychopathology | — | 30.48 (7.18) | — | — |
| PANSS total psychopathology | — | 60.51 (14.25) | — | — |
Note: PANSS, Positive and Negative Syndrome Scale; IQ, intelligence quotient; CPZ, chlorpromazine. Age, education levels, parental education, are expressed in years.
*Significant T statistic for the between-group t test.