Table 1 Characteristics of the cohort of Alytus textile mill workers from 1978 through 2002.
Characteristic | Male | Female | Total |
|---|---|---|---|
Number of workers | 5495 | 9155 | 14650 |
Person years | 84196 | 167607 | 372018 |
Mean age of beginning of study (SD)* | 28.9 (8.6) | 31.1 (9.1) | 28.8 (8.2) |
Mean age of end of study (SD) | 47.9 (7.9) | 47.0 (6.3) | 47.4 (7.1) |
Mean length (years) of service, (SD) | 12.0 (5.1) | 10.1 (5.8) | 12.3 (5.9) |
Number of lost to follow-up (%) | 128 (2.3) | 179 (1.9) | 307 (2.1) |