Table 3.
Demographics and Cognitive Measures
| FHSz | HC | Statistics | |
|---|---|---|---|
| Group size | 29 | 40 | |
| Age | 25.0 (8.6) | 24.9 (7.4) | t 67 = 0.06, P = .95 |
| Gender | 20M/9F | 29M/11F | χ2 = 0.17, P = .68 |
| Handedness | 0.60 (0.51) | 0.76 (0.30) | t 62 = 1.58, P = .16 |
| SES | 3.3 (1.4) | 1.9 (0.6) | t 65 = 5.31, P < .001 |
| PSES | 1.5 (0.8) | 1.7 (0.9) | t 62 = 0.75, P = .46 |
| Education (y) | 13.1 (2.0) | 15.0 (1.4) | t 65 = 4.50, P < .001 |
| MMSE | 28.5 (1.4) | 29.4 (0.7) | t 62 = 3.21, P = .002 |
| WAIS Information | 12.7 (2.5) | 13.1 (2.2) | t 62 = 0.77, P = .44 |
| WAIS Vocabulary | 13.0 (3.0) | 14.3 (2.8) | t 62 = 1.77, P = .08 |
| WAIS Digit Span | 9.6 (2.2) | 12.4 (2.3) | t 62 = 4.81, P < .001 |
| WAIS Digit Symbola | 7.5 (2.3) | 11.5 (2.7) | t 61 = 6.09, P < .001 |
Note: Values are mean (SD) unless otherwise indicated. WAIS scaled scores. Significant differences between groups are highlighted in bold. PSES, parental socioeconomic status; FHSz, first hospitalized schizophrenia; HC, healthy controls; MMSE, Mini-Mental State Examination; SES, socioeconomic status; WAIS, Weschsler Adult Intelligence Scales.
aWAIS Digit Symbol data was lost for 1 HC. Variations in df reflect missing values.