Mortality by leukaemia sub-type in benzene exposed workers (5130 males, 384 females), 1968–2002
| Type of leukaemia | ICD-9 | Obs | Exp | SMR | (95% CI) |
|---|---|---|---|---|---|
| *Acute non-lymphocytic leukaemia is here defined as acute myeloid leukaemia (ICD-9 205.0), acute monocytic leukaemia (ICD-9 206.0), acute erythraemia and erythroleukaemia (207.0), and acute leukaemia of unspecified cell type (208.0). Selected codes in ICD-8 were 205.0, 206.0, 207.0, and 207.2. | |||||
| All leukaemia | 204–208 | 22 | 16.08 | 137 | (86 to 207) |
| Lymphoid leukaemia | 204 | 5 | 5.05 | 99 | (32 to 231) |
| Acute | 204.0 | 0 | 0.83 | 0 | (0 to 444) |
| Chronic | 204.1 | 5 | 4.04 | 124 | (40 to 289) |
| Other and unspecified | 204.2–204.9 | 0 | 0.18 | 0 | – |
| Myeloid leukaemia | 205 | 14 | 9.41 | 149 | (81 to 250) |
| Acute | 205.0 | 12 | 6.60 | 182 | (94 to 318) |
| Chronic | 205.1 | 2 | 2.57 | 78 | (9 to 281) |
| Other and unspecified | 205.2–205.9 | 0 | 0.24 | 0 | – |
| Monocytic leukaemia | 206 | 0 | 0.34 | 0 | – |
| Acute | 206.0 | 0 | 0.25 | 0 | – |
| Chronic | 206.1 | 0 | 0.05 | 0 | – |
| Other and unspecified | 206.2–206.9 | 0 | 0.04 | 0 | – |
| Other and unspecified cell types | 207–208 | 3 | 1.28 | 234 | (48 to 685) |
| Acute | 207.0, 208.0 | 2 | 0.80 | 250 | (30 to 904) |
| Chronic | 207.1, 208.1 | 1 | 0.05 | 1843 | (47 to 10271) |
| Other and unspecified | 207.2–207.9, 208.2–208.9 | 0 | 0.43 | 0 | – |
| ANLL* | 205.0, 206.0, 207.0, 208.0 | 14 | 7.65 | 183 | (100 to 307) |
| All leukaemia excluding ANLL | rem. 204–208 | 8 | 8.43 | 95 | (41 to 187) |