Table 1. Demographic Means and SD by Group for Age, Education Level, and Smoking Status (Smoker vs Non-Smoker) of Healthy Comparison Subjects (HC) and Patients with SZ.
| Demographics | Group means (±SD, min–max) |
p-value | |
|---|---|---|---|
| HC (n=26) | SZ (n=25) | ||
| Mean age (years) | 37.8 (±10.9, 21–55) | 41.4 (±11.7, 23–60) | NS |
| Education | 14.6 (±2.2, 11–19) | 13.4 (±2.3, 7–18) | NS |
| Sex (% male) | 62% | 80% | NS |
| Smoking | 31% | 36% | NS |
| Right handedness | 92% | 80% | NS |
| Age of onset (years) | 21 (±6.4, 10–40) | ||
| Illness duration (years) | 22 (±10.5, 1–37) | ||
| SAPS total score | 6.5 (±4.0, 0–13) | ||
| SANS total score | 16.7 (±4.4, 6–24) | ||
| GAF | 42.2 (±6.9, 36–73) | ||
| Patients receiving medication type, no. | |||
| Typical (exclusively) | 5 | ||
| Atypical (exclusively) | 18 | ||
| Typical+atypical | 3 | ||
Abbreviations: HC, healthy control; NS, not significant; SANS, Scale for the Assessment of Negative Symptoms; SAPS, Scale for the Assessment of Positive Symptoms; SZ, schizophrenia.
No significant differences for any demographics were observed.