Table 1.
Demographic and Clinical Characteristics of the Study Participants at Baseline
| Variable | FEP Group | Control Group |
|---|---|---|
| Age, mean (SD) [range], y | 26.58 (8.49) [18–47] | 24.56 (5.07) [18–35] |
| Educational level, mean (SD), y | 10.96 (3.44) | 15.61 (2.99)a |
| Sex, No. | ||
| Male | 13 | 8 |
| Female | 11 | 10 |
| Handedness, No. | ||
| Right | 24 | 18 |
| Left | 0 | 0 |
| Ever used, No./total No. | ||
| Tobacco | 8/24 | 2/18 |
| Cannabis | 3/24 | 0/18 |
| Duration of untreated bxpsychosis, mean (SD), wk | 20.33 (25.84) | NA |
| PANSS subscale score | ||
| Positive | 23.33 (4.99) | NA |
| Negative | 24.08 (6.03) | NA |
| General psychopathology | 47.92 (8.75) | NA |
Abbreviations: FEP, first-episode psychosis; NA, not applicable; PANSS, Positive and Negative Syndrome Scale.
a
P < .05.