Table 1.
Sociodemographic Characteristics of Patients and Controls Followed for 2 y
| Patients (n = 21) |
Controls (n = 34) |
Test | |||
| Mean | SD | Mean | SD | ||
| Age (y) | 15.7 | 1.7 | 15.2 | 1.4 | t = 1.2; P = 0.241 |
| Gender (male/female) | 16/5 | 21/13 | Chi-square = 0.7; P = 0.412 | ||
| Education (y) | 8.3 | 2.0 | 8.8 | 1.4 | t = 1.9; P = 0.280 |
| Parental socioeconomic statusa (1/2/3/4/5) | 6/8/1/1/5 | 3/8/8/2/13 | P = 0.094; Fisher's exact test | ||
| Handedness: right/left/mixed | 19/1/1 | 29/3/2 | P = 0.835; Fisher's exact test | ||
| Between-scan follow-up period (wk) | 24.2 | 1.0 | 24.2 | 0.5 | t = 0; P = 1.0 |
| Race/ethnicity (Caucasian/Hispanic/Caribbean/other) | 17/1/2/1 | 32/0/1/1 | P = 0.352; Fisher's exact test | ||
| Strauss and Carpenter Scale (baseline) | 52.4 | 8.5 | |||
| Duration of illness (mo) | 3.2 | 3 | |||
| Duration of treatment (wk) | 3.7 | 5.5 | |||
| Diagnosis (schizophrenia/other) | 8/13 | ||||
| Treatment (at baseline): quetiapine/olanzapine/risperidone | 5/8/8 | ||||
| Treatment (at follow-up): quetiapine/olanzapine/risperidone/clozapine/other | 9/2/3/3/2 | ||||
a
Parental socioeconomic status, assessed with the Hollingshead scale28 (ranging from 1 to 5). A rating of 5 corresponds to the highest socioeconomic status and a rating of 1 means the lowest socioeconomic status.