Uranium mill workers’ mortality (since 1940) from selected causes of death by duration of employment (US referent rates): update of cohort to 1998
| Underlying cause of death | Duration of employment (years) | |||
|---|---|---|---|---|
| 1–2 SMR (obs) | 3–9 SMR (obs) | ⩾10 SMR (obs) | ||
| *95% confidence interval excludes the null value (1.0). | ||||
| †99% confidence interval excludes the null value (1.0). | ||||
| ‡Test for trend p value <0.05. | ||||
| All deaths | 1.01 (352) | 0.91 (295) | 0.80 (163)† | ‡ |
| All cancers | 0.94 (75) | 0.91 (68) | 0.83 (41) | |
| Trachea, bronchus, and lung CA | 1.35 (36) | 1.27 (32) | 0.58 (10) | ‡ |
| Lymphatic and haematopoietic CA other than leukaemia | 1.38 (6) | 1.22 (5) | 1.90 (5) | |
| Lymphosarcoma and reticulosarcoma | 2.15 (2) | 1.15 (1) | 2.03 (1) | |
| Hodgkin’s disease | 1.91 (1) | 4.25 (2) | 4.57 (1) | |
| Other lymphatic and haematopoietic CA | 1.03 (3) | 0.73 (2) | 1.56 (3) | |
| Other/unspecified CA | 1.16 (6) | 1.65 (8) | 2.19 (7) | |
| Non-malignant respiratory disease | 1.99 (53)† | 1.12 (29) | 1.02 (18) | ‡ |
| Emphysema | 2.69 (11)† | 1.79 (7) | 1.11 (3) | |
| Pneumoconioses and other respiratory diseases | 2.53 (29)† | 1.07 (12) | 1.35 (11) | |
| Chronic renal disease | 1.27 (3) | 1.33 (3) | 1.53 (2) | |