Table 2.
Demographic Characteristics and Intellectual Performance of Schizophrenia Patients and Healthy Control Subjects
| SZ (n = 148) | HC (n = 157) | |
|---|---|---|
| Age at Testinga | 33.5 (7.5) | 30.2 (6.2)f |
| Educationb | 13.2 (2.2) | 15.4 (2.1)f |
| Mother’s Educationc | 13.2 (2.8) | 12.4 (3.3) |
| Father’s Educationd | 13.7 (3.6) | 12.8 (3.8) |
| Age at Onsete | 22.5 (5.6) | |
| % Malea | 65.5 | 45.9f |
| Race (% W-AA-O)a | 52-46-2 | 69-22-9f |
| Vocabulary SS | 8.8 (3.0) | 11.9 (2.3)f |
| Digit Span SS | 8.5 (2.6) | 10.8 (2.6)f |
HC, healthy control subject; SS, standard score; SZ, schizophrenia patients; W-AA-O, White, African-American, Other.
a
Based on 150 HC, 121 SZ.
b
Based on 149 HC, 119 SZ.
c
Based on 147 HC, 100 SZ.
d
Based on 143 HC, 91 SZ.
e
Based on 112 SZ.
f
Group differences significant at p < .001. Other group differences not statistically significant.