Lung cancer mortality in a cohort of chemical workers exposed to TCDD
| Study group | Observed cases | Not adjusted for smoking | Adjusted for smoking* | ||||
|---|---|---|---|---|---|---|---|
| Exp† | SMR | 95% CI | Exp | SMR | 95% CI | ||
| Source: Fingerhut et al.47 | |||||||
| *Adjusted using smoking data for a subset of the study population (see text). | |||||||
| †Expected number of lung cancer deaths. | |||||||
| ‡Subcohort with >20 years since first employment and >1 year of exposure. | |||||||
| Full cohort | 89 | 80.1 | 1.11 | 0.89 to 1.37 | 84.8 | 1.05 | 0.85 to 1.30 |
| High exposure cohort‡ | 40 | 28.8 | 1.39 | 0.99 to 1.89 | 29.2 | 1.37 | 0.98 to 1.87 |