Dimension | Odds ratios | |||
---|---|---|---|---|

Schizophrenia (n=106) |
Schizoaffective (n=45) |
Mania (n=49) |
All psychoses (n=222)^{1} | |

RDC, Research Diagnostic Criteria; FAI, first factor analysis; FA2, second factor analysis. | ||||

1.One monozygotic and one dizygotic proband did not qualify for any RDC psychotic diagnosis; and 215 probands had FAI scores (i.e. had at least one of the symptoms entered into the factor analysis). | ||||

2.The odds ratio for positive symptom scores in schizophrenia was not reported because 103/106 probands had the maximum score of two. | ||||

^{*}P <0.05 (d.f.=1). | ||||

Symptom scores | ||||

Positive (0-2)^{2} | — | 1.62 | 1.94 | 1.02 |

Negative (0-2) | 1.09 | 0.10 | 0.12 | 1.06 |

Disorganised (0-2) | 1.54 | 0.87 | 2.52 | 1.23 |

Manic (0-5) | 0.87 | 1.06 | 1.67 |
1.21^{*} |

Depressive (0-5) | 1.01 | 1.57 | 1.23 | 0.99 |

General psychotic (0-6) | 1.27 | 0.68 | 1.20 | 1.07 |

Factor scores (FAI) | ||||

First-rank delusions | 0.66 | 0.83 | 4.49 | 0.82 |

First-rank hallucinations | 0.75 | 1.05 | 1.29 | 0.91 |

Paranoid | 0.94 | 1.33 |
0.33^{*} | 0.74 |

Other hallucinations | 1.45 | 0.95 | 0.93 | 1.25 |

Negative | 1.21 | 0.55 | 0.59 | 1.02 |

Disorganised | 1.48 | 1.26 | 2.57 |
1.62^{*} |

Factor scores (FA2) | ||||

Manic | 0.75 | 1.18 | 3.54 |
1.45^{*} |

Depressive | 0.98 | 1.88 | 1.27 | 0.97 |

General psychotic | 1.58 | 0.33 | 1.23 | 1.07 |