Table 1.
Demographic and clinical characteristics of healthy controls and schizophrenic patients.
| Variables | Schizophrenic patients | Healthy controls | F or χ2 | P value |
|---|---|---|---|---|
| Gender (male/female) | 49/30 | 49/45 | 1.71 | 0.19 |
| Age (years) | 27.2 ± 6.8 | 25.8 ± 5.4 | 2.30 | 0.25 |
| Education (years) | 13.9 ± 2.7 | 13.7 ± 3.5 | 0.19 | 0.64 |
| Genotype of rs1344706 (CC/CA/AA) | 18/41/20 | 24/45/25 | 0.30 | 0.86 |
| WMS-R scorea | 93.75 ± 21.07 | 109.31 ± 17.00 | 25.19 | <0.001 |
| DSST scoreb | 52.26 ± 13.33 | 67.67 ± 13.79 | 52.99 | <0.001 |
| CFT scoreb | 18.68 ± 5.35 | 21.73 ± 6.48 | 10.66 | 0.001 |
| PANSS total score | 76.85 ± 12.94 | n.a. | n.a. | n.a. |
| PANSS positive score | 23.63 ± 4.33 | n.a. | n.a. | n.a. |
| PANSS negative score | 18.51 ± 5.70 | n.a. | n.a. | n.a. |
| PANSS general score | 35.68 ± 5.43 | n.a. | n.a. | n.a. |
Data are given as mean ± SD; P-values refer to one-way ANOVA (parametric data) and the χ2 test (categorical data). WMS-R, Wechsler Memory Scale-Revised; DSST, Digit Symbol Substitution Test; CFT, Category Fluency Test-animal naming; PANSS, Positive and Negative Syndrome Scale; n.a., not applicable. aData were from 59 patients and 94 controls; bData were from 74 patients and 93 controls.