Table 1.
Demographic, clinical characteristics, and dietary total antioxidant capacity (TAC) intake.
| Normal Controls (N = 25) | Schizophrenia Patients (N = 29) | Statistics | P values | |
|---|---|---|---|---|
| Age (years) | 38.76±13.721 | 41.10±13.81 | 0.009 | 0.55 |
| Sex (male:female) | 11:14 | 20:9 | 2.48 | 0.12 |
| Smoker:Nonsmoker | 7:18 | 8:21 | 0.00 | 1.00 |
| Education (year) | 13.4±1.6 | 12.1±2.0 | 5.77 | 0.020 |
| Age of illness onset (year) | n/a | 21.4±8.4 | n/a | n/a |
| Duration of illness (year) | n/a | 20.0±13.4 | n/a | n/a |
| BPRS score | n/a | 43.28±9.93 | n/a | n/a |
| UPSA-2 | 102.9±10.3 | 90.7±10.5 | 17.62 | <0.001 |
| Fasting duration (hours) | 12.18±2.81 | 12.48±3.64 | 0.11 | 0.74 |
| GSH (μmol/L) | 800.50±201.73 | 516.50±238.40 | 21.06 | <0.001 |
| GSSG (μmol/L) | 19.96±24.82 | 27.94±23.19 | 8.56 | 0.005 |
| %GSSG | 2.40±3.02 | 12.43±24.18 | 2.28 | 0.023 |
| TAC intake/week (μmol FRAP/week) | 12620.6 + 1046.2 | 15257.7 + 1800.0 | 1.48 | 0.23 |
1
Values are mean ± sd. BPRS: Brief Psychiatric Rating Scale total score. UPSA-2: the University of California San Diego Performance-based Skills Assessment, 2nd edition total score (the data for controls was from 23 subjects because 2 controls did not complete UPSA-2).