Table 3.
Three-Factor Structure of the Structured Interview for Prodromal Syndromes (SIPS) in Chromosome 22q11.2 Deletion Syndrome (22q11DS)
| Subscale | Description | Factor 1 (Positive) |
Factor 2 (Negative) |
Factor 3 (Disorganized) |
|---|---|---|---|---|
| P1 | Unusual Thought Content/Delusional Ideas | 0.83 | ||
| P4 | Perceptual Abnormalities/Hallucinations | 0.81 | ||
| D2 | Bizarre Thinking | 0.66 | 0.31 | |
| P2 | Suspiciousness/Persecutory Ideas | 0.55 | ||
| P3 | Grandiosity | 0.43 | 0.33 | |
| N4 | Experience of Emotions and Self | 0.39 | ||
| N2 | Avolition | 0.81 | ||
| N6 | Occupational Functioning | 0.78 | ||
| G4 | Impaired Tolerance to Normal Stress | 0.74 | ||
| N1 | Social Anhedonia | 0.62 | ||
| D4 | Personal Hygiene | 0.62 | ||
| G2 | Dysphoric Mood | 0.62 | ||
| G1 | Sleep Disturbances | 0.56 | ||
| D3 | Trouble with Focus and Attention | 0.49 | ||
| N3 | Expression of Emotion | 0.30 | 0.39 | |
| D1 | Odd Behavior or Appearance | 0.51 | ||
| P5 | Disorganized Communication | 0.47 | ||
| N5 | Ideational Richness | 0.34 | ||
| G3 | Motor Disturbance | 0.33 |
Note: Subscales are ordered by factor, then by loading. Loadings < 0.30 are not included.