Multiple Myeloma by Cumulative Benzene Exposure in a Cohort of Pliofilm Workers
| Cumulative Exposure in ppm-years . | Observed Deaths . | Expected Deaths . | Standardized Mortality Ratios . | 95% CI . |
|---|---|---|---|---|
| <40 | 3 | 0.93 | 3.21 | 0.66-9.39 |
| 40-200 | 0 | 0.30 | 0 | 0.0-12.29 |
| 200-400 | 0 | 0.10 | 0 | 0.0-36.89 |
| 400+ | 1 | 0.04 | 25.17 | 0.63-139.83 |
| Total | 4 | 1.37 | 2.91 | 0.79-7.45 |
| Cumulative Exposure in ppm-years . | Observed Deaths . | Expected Deaths . | Standardized Mortality Ratios . | 95% CI . |
|---|---|---|---|---|
| <40 | 3 | 0.93 | 3.21 | 0.66-9.39 |
| 40-200 | 0 | 0.30 | 0 | 0.0-12.29 |
| 200-400 | 0 | 0.10 | 0 | 0.0-36.89 |
| 400+ | 1 | 0.04 | 25.17 | 0.63-139.83 |
| Total | 4 | 1.37 | 2.91 | 0.79-7.45 |
Data from Wong.52