Monotonous work |

Neither year | 615 | 1.0 | |

Either or both years | 192 | 1.7 | 1.3 to 2.2 |

Stressful work |

Neither year | 552 | 1.0 | |

Either or both years | 263 | 1.7 | 1.3 to 2.2 |

Hectic work |

Neither year | 426 | 1.0 | |

Either or both years | 389 | 1.6 | 1.3 to 2.1 |

Seldom learn new things |

Neither year | 732 | 1.0 | |

Either or both years | 84 | 1.4 | 0.95 to 2.1 |

Dissatisfied with job |

Neither year | 745 | 1.0 | |

Either or both years | 62 | 1.5 | 0.98 to 2.2 |

Dissatisfied with support from colleagues |

Neither year | 768 | 1.0 | |

Either or both years | 43 | 1.7 | 1.04 to 2.8 |

GHQ score >0 |

Neither year | 302 | 1.0 | |

Either or both years | 517 | 2.1 | 1.6 to 2.7 |