Mortality in UK polyurethane foam workers (5824 men, 2464 women) by time since first employment, 1958–98
| Males | Females | |||||||
|---|---|---|---|---|---|---|---|---|
| Time since first employment (years) | Obs | Exp | SMR (95% CI) | p value for trend† | Obs | Exp | SMR (95% CI) | p value for trend† |
| *p<0.05, **p<0.01, ( ) indicates deficit. | ||||||||
| †Linear component of trend over four time periods. | ||||||||
| ‡ICD-9 162. | ||||||||
| §ICD-9 460–519. | ||||||||
| All causes | ||||||||
| 0–9 | 125 | 162.3 | 77(**) (64 to 92) | 36 | 42.1 | 86 (60 to 118) | ||
| 10–19 | 391 | 339.9 | 115** (104 to 127) | 108 | 93.6 | 115 (95 to 139) | ||
| 20–29 | 450 | 389.5 | 116** (105 to 127) | 0.16 | 151 | 124.6 | 121* (103 to 142) | 0.63 |
| ≥30 | 332 | 326.6 | 102 (91 to 113) | 69 | 69.4 | 99 (77 to 126) | ||
| Total | 1298 | 1218.2 | 107* (101 to 113) | 364 | 329.7 | 110 (99 to 122) | ||
| Lung cancer‡ | ||||||||
| 0–9 | 16 | 15.3 | 105 (60 to 170) | 4 | 1.9 | 215 (59 to 550) | ||
| 10–19 | 41 | 35.0 | 117 (84 to 159) | 11 | 5.5 | 201* (100 to 359) | ||
| 20–29 | 44 | 40.9 | 107 (78 to 144) | 0.60 | 12 | 7.9 | 152 (79 to 266) | 0.76 |
| ≥30 | 33 | 33.8 | 98 (67 to 137) | 8 | 4.1 | 193 (83 to 380) | ||
| Total | 134 | 125.0 | 107 (90 to 127) | 35 | 19.4 | 181** (126 to 251) | ||
| Non-malignant diseases of the respiratory system§ | ||||||||
| 0–9 | 11 | 14.1 | 78 (39 to 139) | 1 | 3.2 | 32 (1 to 177) | ||
| 10–19 | 38 | 30.3 | 125 (89 to 172) | 6 | 7.1 | 84 (31 to 183) | ||
| 20–29 | 55 | 36.7 | 150** (113 to 195) | 0.79 | 15 | 10.9 | 137 (77 to 227) | 0.02 |
| ≥30 | 36 | 35.9 | 100 (70 to 139) | 13 | 7.2 | 180 (96 to 308) | ||
| Total | 140 | 116.9 | 120* (101 to 141) | 35 | 28.4 | 123 (86 to 171) | ||