Table 1.
Sociodemographic and clinical characteristics of the sample according to patients’ age at the onset of psychosis
| EOP patients N = 58 |
AOP patients N = 273 |
t/χ2/Z/Wald statistic |
p | |
|---|---|---|---|---|
|
Age (years) (mean ± SD) |
15.5 ± 1.8 | 25.2 ± 5.1 | − 14.250 | < 0.001 |
| Sex (N,% male) | 41 (70.7) | 181 (66.5) | 0.373 | 0.664 |
| SES (mean ± SD) | 2.9 ± 1.5 | 3.1 ± 1.3 | − 1.098 | 0.273 |
| Adoptee (N,%) | 2 (3.4) | 0 | 9.437 | 0.030 |
| Personal psychiatric background (N,%) | 37 (63.8) | 78 (28.6) | 27.798 | < 0.001 |
| Current Cannabis abuse or dependence (N,%) | 11 (19) | 56 (20.5) | 0.859 | 0.475 |
| Familial psychotic history (1st degree) (N,%) | 7 (12.1) | 25 (9.2) | 0.464 | 0.319 |
| DUP (days) [25th percentile, 75th percentile] | 91 [33–177] | 58 [21–140] | − 2.006 | 0.045 |
| SOS general, number of symptoms (mean ± SD) | 4.1 ± 1.4 | 3.5 ± 1.6 | 8.012 | 0.005 |
| SOS negative, number of symptoms (mean ± SD) | 1.2 ± 1.3 | 0.8 ± 1.1 | 6.060 | 0.014 |
| SOS positive, number of symptoms (mean ± SD) | 1.8 ± 0.4 | 1.5 ± 0.6 | 7.539 | 0.006 |
| SOS disorganized, number of symptoms (mean ± SD) | 0.9 ± 0.9 | 0.9 ± 0.9 | 0.006 | 0.937 |
| SOS total, number of symptoms (mean ± SD) | 8 ± 3 | 6.7 ± 2.8 | 9.134 | 0.003 |
| PANSS-P scores (mean ± SD) | 19.6 ± 8.2 | 18.5 ± 7.9 | 1.094 | 0.296 |
|
PANSS-N scores (mean ± SD) |
18.9 ± 9.9 | 18.5 ± 7.7 | 0.385 | 0.701 |
| PANSS-G scores (mean ± SD) | 36.8 ± 16.4 | 37.6 ± 11.8 | 0.195 | 0.659 |
| PANSS-T scores (mean ± SD) | 78.6 ± 29.5 | 74.3 ± 23.4 | 1.446 | 0.229 |
AOP adult onset psychosis, EOP early onset psychosis, PANSS positive And negative syndrome scale, P positive, N negative, G general, T total, SD standard deviation, SES socioeconomic status, SOS symptom onset of schizophrenia