Table 1.
Demographicsa
| Measure | Control (n = 21) | Schizophrenia (n = 21) | Statistic | P value |
|---|---|---|---|---|
| Age, years | 23.5 (4.5) | 23.2 (4.4) | t(40) = 0.21 | .84 |
| Sex, F/M | 5/16 | 5/16 | χ2(1) = 0 | 1 |
| Smoker, yes/no | 0/21 | 6/15 | χ2(1) = 7.0 | .01 |
| Parental SESb | 3.4 (3.3) | 4.3 (4.4) | t(39) = 0.72 | .48 |
| RBANSc | 95.1 (8.6) | 74.0 (15.0) | t(35) = 5.32 | <.001 |
| Immediate memory | 99.8 (12.8) | 79.3 (14.5) | t(35) = 4.58 | <.001 |
| Visuospatial/constructional | 89.7 (13.8) | 78.8 (17.3) | t(35) = 2.13 | .04 |
| Language | 105.2 (10.5) | 83.4 (10.8) | t(35) = 6.21 | <.001 |
| Attention | 97.2 (14.2) | 76.1 (19.8) | t(35) = 3.74 | .001 |
| Delayed memory | 92.3 (8.7) | 79.9 (19.0) | t(35) = 2.58 | .01 |
| Duration of untreated psychosis, weeks | — | 25.7 (44.9) | — | — |
| Treatment duration, weeks | — | 55.3 (65.0) | — | — |
| BPRSd | ||||
| Total | — | 32.3 (9.8) | — | — |
| Positive | — | 5.5 (3.3) | — | — |
| Negative | — | 5.9 (2.4) | — | — |
| UPSAe | — | 80.6 (10.8) | — | — |
Note: aMean (SD).
bSocioeconomic Status. Ranks determined from the Diagnostic Interview for Genetic Studies (1–18 scale); higher rank (lower numerical value) corresponds to higher socioeconomic status. Information not available for 1 patient.
cRepeatable Battery for the Assessment of Neuropsychological Status. Information not available for 3 patients and 2 controls.
dBrief Psychiatric Rating Scale. Scored on a 1–7 scale. Positive subscale: conceptual disorganization, hallucinatory behavior, and unusual thought content. Negative subscale: emotional withdrawal, motor retardation, and blunted affect. Information not available for 2 patients.
eUCSD Performance-Based Skills Assessment. Information not available for 4 patients.