Table 1.
Summary demographic characteristics of probands and summary educational and occupational attainment scores of probands and their parentsa
| Unaffected comparison | Schizophrenia | Major depressive disorder | Bipolar disorder | |
|---|---|---|---|---|
| N | 162 | 80 | 215 | 50 |
| Age, years | 51.3 ± 14.6 | 49.3 ± 11.6 | 48.8 ± 13.4 | 46.5 ± 11.9 |
| Age of onset, years | - | 23.2 ± 8.2 (80) | 36.1 ± 15.0 (213) | 25.9 ± 8.6 (42) |
| % ⩾30 years old | 88% | 94% | 89% | 86% |
| Sex | 121M/41F | 56M/24F | 137M/78F | 26M/24F |
| Race | 137 White | 70 White | 192 White | 44 White |
| 24 Black | 10 Black | 21 Black | 6 Black | |
| 1 Asian | 2 Asian | |||
| Proband education | 4.9 ± 1.2 | 4.0 ± 1.2 | 4.6 ± 1.2 | 4.9 ± 1.2 |
| Mother education | 3.8 ± 1.2 (151) | 4.0 ± 1.5 (68) | 3.8 ± 1.3 (203) | 4.1 ± 1.2 (49) |
| Father education | 3.9 ± 1.4 (146) | 4.2 ± 1.8 (66) | 3.8 ± 1.5 (199) | 3.9 ± 1.5 (48) |
| Proband occupation | 5.8 ± 2.1 | 3.2 ± 2.0 | 5.2 ± 2.1 | 5.6 ± 2.2 |
| Mother occupation | 3.1 ± 2.2 (156) | 3.9 ± 2.7 (75) | 3.5 ± 2.5 (207) | 3.6 ± 2.4 (48) |
| Father occupation | 4.8 ± 2.1 (147) | 5.3 ± 2.5 (69) | 4.8 ± 2.2 (199) | 5.2 ± 2.0 (48) |
a
Parentheses contain the numbers of parents with available data. Values are mean ± SD.