Table 2.
Demographic and Clinical Features of Unrelated Adults With Schizophrenia Participating in a Study of Genetic Counseling
| Participants With Schizophrenia (n = 25a) | ||
|---|---|---|
| Mean | (SD) | |
| Age at time of counseling (years) | 46.8 | (12.6) |
| Age at onset of psychosisb (years) | 22.6 | (4.7) |
| NARTc-estimated full scale premorbid IQ | 102.8 | (9.6) |
| Number of liveborn offspring | 1.0 | (1.4) |
| n | (%) | |
| Female sex | 10 | (40.0) |
| European ancestry | 24 | (96.0) |
| Family history of psychosisd | 7 | (28.0) |
| Ever marriede | 11 | (44.0) |
| Childless | 14 | (56.0) |
| Education | ||
| Did not complete high school | 7 | (28.0) |
| Completed high school (only) | 8 | (32.0) |
| Completed some postsecondary education | 10 | (40.0) |
| Primary source of concern about recurrence | ||
| Niece/nephew | 10 | (40.0) |
| Offspringf | 10 | (40.0) |
| Grandchild | 3 | (12.0) |
| Sibling | 1 | (4.0) |
| No person of concern | 1 | (4.0) |
aNot including n = 4 involved in pilot testing, n = 2 unable to complete paper-based measures, and n = 1 who failed to complete either set of follow-up measures (see text and figure S1 for details).
bDefined as age at first treatment for psychosis; none with childhood onset schizophrenia.
cNational Adult Reading Test30.
dDefined as having a first degree relative with a psychotic illness.
eIncludes marriage or a common-law arrangement of one year or more.
fNone had two parents with schizophrenia; includes potential future offspring.