Mortality of benzene exposed workers (5130 males, 384 females) by period of death, 1968–2002
| Period | All causes | All neoplasms | ANLL* | Other leukaemia | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Obs | SMR | (95% CI) | Obs | SMR | (95% CI) | Obs | SMR | (95% CI) | Obs | SMR | (95% CI) | |
| *Acute non-lymphocytic leukaemia (see footnote to table 3). | ||||||||||||
| †Expected = 0.44. | ||||||||||||
| ‡Expected = 0.91. | ||||||||||||
| 1968–1970 | 95 | 80 | (65 to 98) | 29 | 91 | (61 to 131) | 1 | 263 | (7 to 1465) | 0 | 0† | (0 to 825) |
| 1971–1975 | 274 | 110 | (98 to 124) | 86 | 127 | (102 to 157) | 2 | 266 | (32 to 961) | 1 | 124 | (3 to 688) |
| 1976–1980 | 307 | 96 | (85 to 107) | 92 | 104 | (84 to 128) | 0 | 0‡ | (0 to 405) | 1 | 96 | (2 to 538) |
| 1981–1985 | 384 | 102 | (92 to 112) | 134 | 125 | (104 to 148) | 2 | 183 | (22 to 661) | 1 | 77 | (2 to 428) |
| 1986–1990 | 414 | 102 | (93 to 113) | 129 | 106 | (88 to 126) | 3 | 242 | (50 to 708) | 1 | 70 | (2 to 388) |
| 1991–1995 | 448 | 111 | (101 to 122) | 149 | 119 | (101 to 140) | 1 | 74 | (2 to 410) | 2 | 137 | (17 to 493) |
| 1996–2002 | 508 | 94 | (86 to 103) | 157 | 94 | (80 to 110) | 5 | 260 | (84 to 607) | 2 | 103 | (12 to 371) |
| Total | 2430 | 101 | (97 to 105) | 776 | 110 | (102 to 118) | 14 | 183 | (100 to 307) | 8 | 95 | (41 to 187) |