Table 2 Working characteristics and vital status of male workers present in the plant between 1 January 1968 and date of closure (1984) of the plant, n = 2916.
| n (%) | ||
|---|---|---|
| Start of employment in the plant | ||
| Before 1968 | 2602 (89.2) | |
| 1968–1972 | 291 (10.0) | |
| 1973–1977 | 21 (0.7) | |
| 1978–closure | 2 (0.1) | |
| Departure from the plant | ||
| 1968–1972 | 631 (21.6) | |
| 1973–1977 | 474 (16.3) | |
| 1978–1982 | 1424 (48.8) | |
| After 1982 | 387 (13.3) | |
| Duration of employment in the plant (years) | ||
| Mean (SD) | 15.4 (7.0) | |
| Interquartile range | 10.2 to 20.5 | |
| Mean (SD) number of SEGs by workers | 1.5 (0.7) | |
| No of workers with missing occupational data | 41 (1.4) | |
| Vital status | ||
| Living on 31 December 1999 | 2065 (70.8) | |
| Living on 31 December 1997* | 164 (5.6) | |
| Deceased by 31 December 1999 | 655 (22.5) | |
| Cause of death unknown (% of deceased) | 46 (7.0) | |
| Unknown status | 32 (1.1) |
SEG, similar exposure group.
*Status not obtained for 1997–1999.