Comparison of the Asbest Chrysotile Cohort with other chrysotile cohort studies
| Study | N | Birth year (range) | Total person-years | Duration—median years (range) | Cumulative exposure | |||
| Dust (mg/m3 years) | Fibre (fibre/cm3 years) | |||||||
| Median | Range | Median | Range | |||||
| Males | ||||||||
| Asbest chrysotile cohort | 22 463 | 1891–1992 | 320 151 | 10.4 (1.0–59.5) | 26.3 | 0–1641.4 | 16.3 | 0–408 |
| Quebec chrysotile miners and millers18 | 10 918 | 1891–1920 | 425 160† | 0.0–8000 | ||||
| Qinghai provence chrysotile mine20 | 1539 | 1934–1957 | 34 736 | Mean: 27.3 (21.1–33.5) | 108.7 | 1.8–3613.5 | ||
| Balangero mine, Italy22–24 28 | 974 | 1877–1968 | 35 362 | 0.5–47 | 96.5 | 3–2700‡ | ||
| South carolina asbestos textile plant25 | 1256 | ~1885–~1947 | 33 141 | 1.1 (0.1–46.8) | 4.4 | 0.1–700 | ||
| Females | ||||||||
| Asbest chrysotile cohort | 13 374 | 1904–1991 | 195 204 | 11.9 (1.0–55.7) | 25.1 | 0–1184.4 | 16.8 | 0–400 |
| South carolina asbestos textile plant25 | 1244 | ~1885–~1947 | 0.9 (0.1–43.7) | 4.2 | 0.2–317 | |||
NB: No other cohorts explicitly reported on professionally non-exposed workers in published materials.
* Cumulative exposures reported in this table for the Asbest Chrysotile Cohort only include cohort members that were professionally exposed and the employment-years are reported in this table.
†Person-years of follow-up to May 1992 reported for the complete cohort with no exclusions for eligibility or adjustments for analyses.
‡Derived from the published tertiles