Comparison of the relative risk and absolute risk reduction of silicosis at a cumulative respirable crystalline silica exposure of 2 mg/m3-years versus 4 mg/m3-years among miners and non-miners
| Risk ratio at reference 4 mg/m3-years | Risk ratio at 2 mg/m3-years (95% CI) | Absolute risk reduction of 2 vs 4 mg/m3-years per 1000 persons (95% CI) | |
| Miners | 1 | 0.23 (0.18 to 0.29) | 323 (298 to 344) |
| Non-miners | 1 | 0.55 (0.36 to 0.83) | 23 (9 to 33) |