Number of groups | _{BG}S_{y}^{2} | _{WG}S_{y}^{2} | _{WW}S_{y}^{2} | _{TOTAL}S_{y}^{2} | Contrast | |
---|---|---|---|---|---|---|

_{BG}S_{y}^{2}, between-group variance; _{WG}S_{y}^{2}, within-group variance; _{WW}S_{y}^{2}, within-worker variance; _{TOTAL}S_{y}^{2}, total variance. | ||||||

Contrast in exposure between groups: _{BG}S_{y}^{2}/_{BG}S_{y}^{2} + _{WG}S_{y}^{2}. | ||||||

*A total of 324 groups was possible. For 78 groups no measurements were available, leaving 246 groups for the analysis. | ||||||

Tasks | 6 | 0.089 | 0.208 | 0.264 | 0.558 | 0.300 |

Automation | 4 | 0.009 | 0.263 | 0.275 | 0.547 | 0.033 |

Factory size | 2 | 0.053 | 0.259 | 0.275 | 0.586 | 0.170 |

Use of compressed air | 2 | 0.038 | 0.348 | 0.275 | 0.562 | 0.098 |

Factory | 54 | 0.062 | 0.210 | 0.275 | 0.546 | 0.228 |

Task + factory size | 12 | 0.139 | 0.136 | 0.263 | 0.538 | 0.505 |

Task + factory | 246* | 0.142 | 0.134 | 0.2635 | 0.539 | 0.514 |

Task + factory, quintiles | 5 | 0.204 | 0.115 | 0.263 | 0.582 | 0.639 |