Table 2.
Developmental effects on positive and negative symptoms in first episode psychosis.
| Measure | F | p-value | q-value | Age periods (years) of significant change |
|---|---|---|---|---|
| Positive Symptom Scores | ||||
| Total | 0.3 | 0.6 | 0.6 | NA |
| Perceptual | 7.0 | 7.0e-04** | 0.003** | 14.3–26.8 |
| Non-perceptual | 4.1 | 0.01* | 0.02* | 16.3–22.4 |
| Negative Symptom Scores | ||||
| Total | 1.6 | 0.19 | 0.24 | NA |
| Flat Affect | 9.8 | 0.002** | 0.006** | 12.0–40.0 |
| Anhedonia | 6.7 | 3.5e-05** | 0.0003** | 17.2–23.1 |
| Alogia | 2.5 | 0.07 | 0.12 | NA |
| Apathy | 1.8 | 0.17 | 0.24 | NA |
| Attention | 0.5 | 0.44 | 0.59 | NA |
*
p < .05
**
p < .01