Table 2

Predicted excess lifetime risks2-150 2-151of mortality from lung cancer assuming 45 years of respirable crystalline silica dust exposure (lagged 10 years) based on Poisson regression linear relative rate model with external adjustment2-152

Concentration (mg/m3) White men White women Black men Black women Total population
0.0010.40.20.40.20.3
0.0051.91.11.90.91.5
0.013.82.23.71.72.9
0.027.64.47.43.45.9
0.03116.7115.28.8
0.04158.9156.912
0.051911188.615
0.062313221018
0.072615251220
0.083018291423
0.093420331526
0.103722361729
  • 2-150 Excess risk estimates are for 1000 workers. For example, the excess lifetime risk of lung cancer for white men at 0.05 mg/m3 of silica is 19 deaths per 1000 workers.

  • 2-151 Assuming that workers were exposed to a constant silica concentration for 45 years between the ages of 20 and 65, and accumulating annual risks up to age 85.

  • 2-152 US 1992 lung cancer mortalities.