Table 1.
Demographic and Clinical Characteristics of Patients and Controls.
| Schizophrenia (n = 32) | Controls (n = 39) | |
|---|---|---|
| Age, mean (SD) | 38.0 (11.1) | 39.2 (10.6) |
| No. of males:females | 21:11 | 27:12 |
| Educational level commenceda, mean (SD) | 2.0 (0.7) | 2.3 (0.7) |
| Years of education, mean (SD) | 12.1 (2.6) | 14.2 (3.1) |
| No. of high: middle parental SESb | 12:20 | 13:26 |
| Level of functioning (PSP), mean (SD) | 59.0 (15.4) | 85.8 (4.9) |
| Positive symptoms (SAPS)c, mean (SD) | 4.6 (4.2) | — |
| Negative symptoms (SANS)d, mean (SD) | 7.4 (4.5) | — |
| CPZ equivalent dose in mg, mean (SD) | 686 (561) | — |
aEducational level commenced divided into 4 levels: 1: primary school (up to 10 years of education), 2: secondary school/technical training, 3: bachelor program, 4: master program. bParental socioeconomic status (SES) was divided into 3 levels: where a high SES corresponds to one of the parents having a high education + at least a middle annual income (above 200.000 DKK) or a middle education + a high income (above 400.000 DDK), while a middle SES corresponds to a high education + low income (below 200.000 DDK), a middle education + middle income (200.000–400.000 DDK) or no education + at least a middle income. None of the parents had a low SES. cSAPS score is the total score of the 4 items: global rating of severity of hallucinations, delusions, bizarre behavior and the global rating of positive formal thought disorder. dSANS score is the total score of the 5 items: global rating of affective flattening, alogia, avolition-apathy, anhedonia-asociality and attention.