Main characteristics of the study population
| Both sexes | Men | Women | |
|---|---|---|---|
| Number of participants, n (%) | 2024 | 1605 (79.3) | 419 (20.7) |
| Mean duration of follow-up (SD), in years | 22.0 (9.30) | 21.9 (9.40) | 22.3 (8.93) |
| Mean age at inclusion (SD), in years | 39.2 (12.9) | 39.3 (13.0) | 38.7 (12.5) |
| Mean duration of work at inclusion* (SD), in years | 14.5 (8.4) | 14.2 (8.3) | 15.9 (9.1) |
| Type of fibres† | |||
| Chrysotile only n (%) | 1 320 (65.2) | 1 146 (71.4) | 174 (41.5) |
| Mixed‡ n (%) | 704 (34.8) | 459 (28.6) | 245 (58.5) |
*Participants already employed in the plant in 1978 (1358 men and 334 women).
†Number of exposed participants (percentage).
‡Both chrysotile and amphiboles for a given person.