Term in model | Estimate | Standard error | Likelihood ratio test† | ||
---|---|---|---|---|---|

*Power model for asbestosis mortality rate is given by λ = λ_{0} × (E + α)^{β} where λ_{0} = exp[β_{0} + β_{1}(sex = female) + β_{2}(race = non-white) + β_{3}(age = 50–59 years) + β_{4}(age = 60–74 years) + β_{5}(age = 75+ years) + β_{6}(birth cohort = prior to 1920)], E is cumulative chrysotile exposure (in fibre-years/ml), α = 0.9 (estimated iteratively), and β = (β_{7} + β_{8}(age = 50–59 years) + β_{9}(age = 60–74 years) + β_{10}(age = 75+ years)). | |||||

†Likelihood ratio χ^{2} statistic, degrees of freedom, p value. | |||||

Intercept | β_{0} | −14.4 | 1.94 | – | |

Sex | Male | Ref | – | – | 10.5, 1, 0.0012 |

Female | β_{1} | −0.938 | 0.299 | ||

Race | White | Ref | – | – | 11.9, 1, 0.0006 |

Non-white | β_{2} | −1.20 | 0.390 | ||

Age | <50 years | Ref | – | – | 20.4, 3, 0.0001 |

50–59 years | β_{3} | 1.06 | 2.59 | ||

60–74 years | β_{4} | 3.32 | 2.14 | ||

75+ years | β_{5} | 6.62 | 2.07 | ||

Birth cohort | 1920+ | Ref | – | – | 5.54, 1, 0.019 |

<1920 | β_{6} | 0.811 | 0.373 | ||

Exposure | Fibre-years/ml; no lag | α | 0.9 | – | – |

β_{7} | 1.52 | 0.417 | 95.5, 1, <0.0001 | ||

Exposure×age | <50 years | Ref | – | – | 9.30, 3, 0.026 |

50–59 years | β_{8} | −0.0175 | 0.540 | ||

60–74 years | β_{9} | −0.314 | 0.456 | ||

75+ years | β_{10} | −0.897 | 0.451 |