Table 2.
Demographic, cognitive, and clinical measures in patient subgroups
| Measure | Non-AA patientsa | AA patientsb | Inferential statistic |
|---|---|---|---|
| Demographic | |||
| Age, years, M(SD) | 36.7 (10.3) | 38.3 (9.6) | t = 0.672 |
| Gender | 26 female, 59 male | 10 female, 13 male | χ2 = 1.353 |
| Race | 47 C, 27 AFA, 3 AS, 7 M/O | 6 C, 16 AFA, 1 AS, 0 M/O | χ2 = 11.489** |
| Subject education, M (SD) | 13.3 (2.1) | 13.0 (2.1) | t = 0.675 |
| Parental education, M (SD) | 14.6 (2.7) | 13.5 (3.4) | t = 1.611 |
| Cognitive, M(SD) | |||
| WASI estimated IQ (four subtests) | 96.1 (14.7) | 88.9 (10.0) | t = 2.721** |
| WRAT-Reading scaled score | 98.6 (15.5) | 91.8 (10.5) | t = 2.457* |
| WTAR scaled core | 101.0 (17.6) | 91.8 (15.6) | t = 2.268* |
| MATRICS composite score | 33.9 (13.2) | 29.1 (9.6) | t = 1.621 |
| MATRICS working memory | 41.0 (10.6) | 35.0 (8.1) | t = 2.527* |
| MATRICS processing speed | 38.6 (13.0) \ | 36.0 (10.3) | t = 0.895 |
| Clinical, M(SD) | |||
| BPRS mean item score—all items | 1.7 (0.4) | 1.7 (0.5) | t = 0.334 |
| BPRS mean item score—Psychosis | 2.1 (1.2) | 2.3 (1.2) | t = 0.663 |
| BPRS mean item score—Depression | 1.8 (0.9) | 2.1 (1.1) | t = 1.180 |
| SANS mean item score—all items | 1.5 (0.7) | 1.5 (0.6) | t = 0.184 |
| SANS mean item score—Avolition/Anhedonia | 2.0 (0.9) | 1.9 (0.7) | t = 0.557 |
Note. AA = ambiguity averse. AFA = African American. AS = Asian. BPRS = Brief Psychiatric Rating Scale. C = Caucasian. MATRICS = Measurement and Treatment Research to Improve Cognition in Schizophrenia Consensus Cognitive Battery. M/O = mixed/other. SANS = Scale for the Assessment of Negative Symptoms. WASI = Wechsler Abbreviated Scale of Intelligence. WRAT-Reading = Wide-Ranging Achievement Test, Reading Subtest. WTAR = Wechsler Test of Adult Reading.
a
n = 85.
b
n = 23.
*
p < 0.05.
**
p < 0.01.
***
p < 0.001.