Table 5
Uranium mill workers’ mortality (since 1940) from selected causes of death by length of time since first employment (US referent rates): update of cohort to 1998
| Underlying cause of death | Time since first employment (years) | ||
|---|---|---|---|
| <10 SMR (obs) | 10–19 SMR (obs) | ⩾20 SMR (obs) | |
| *95% confidence interval excludes the null value (1.0). | |||
| **99% confidence interval excludes the null value (1.0). | |||
| All deaths | 0.95 (68) | 0.87 (125) | 0.93 (617) |
| All cancers | 0.62 (7) | 0.88 (25) | 0.92 (152) |
| Trachea, bronchus, and lung CA | 0.36 (1) | 1.45 (13) | 1.12 (64) |
| Lymphatic and haematopoietic CA other than leukaemia | 1.35 (1) | 0.00 (0) | 1.72 (15) |
| Lymphosarcoma and reticulosarcoma | 3.33 (1) | 0.00 (0) | 2.24 (3) |
| Hodgkin’s disease | 0.00 (0) | 0.00 (0) | 7.19 (4)** |
| Other lymphatic and haematopoietic CA | 0.00 (0) | 0.00 (0) | 1.18 (8) |
| Other/unspecified CA | 0.00 (0) | 1.21 (2) | 1.76 (19)* |
| Non-malignant respiratory disease | 1.32 (4) | 1.48 (11) | 1.42 (85)** |
| Emphysema | 2.39 (1) | 2.21 (4) | 1.89 (16)* |
| Pneumoconioses and other respiratory diseases | 3.73 (2) | 2.24 (4) | 1.61 (46)** |
| Chronic renal disease | 3.95 (3) | 1.23 (1) | 0.92 (4) |
