Adjusted odds ratios* for byssinosis in relation to cumulative exposure levels† in cotton textile workers
| Exposure to endotoxin | Exposure to dust | |
|---|---|---|
| *The odds ratios were adjusted by age, years worked, smoking status, and gender (for whole group) in GEE models. | ||
| †Endotoxin exposure levels (Eu/m3.years): lowest, <20616; low, 20616–48129; middle, 48129–80398; high, >80398. Dust exposure levels (mg/m3.years): lowest, <9; low, 9–<14; middle, 14–<21; high, >21. The lowest levels of cumulative exposure were as reference. | ||
| Statistically significant odds ratios are italicised. | ||
| Whole group (n = 429) | ||
| Lowest | 1.0 | 1.0 |
| Low | 0.6 (0.29 to 1.32) | 1.6 (0.70 to 3.46) |
| Middle | 1.4 (0.54 to 3.35) | 1.0 (0.44 to 2.15) |
| High | 1.9 (1.02 to 3.51) | 1.8 (1.03 to 3.32) |
| Male (n = 203) | ||
| Lowest | 1.0 | 1.0 |
| Low | 0.5 (0.17 to 1.62) | 2.5 (0.86 to 7.32) |
| Middle | 2.5 (0.50 to 4.05) | 0.8 (0.26 to 2.59) |
| High | 1.9 (0.86 to 3.96) | 2.4 (1.13 to 5.10) |
| Female (n = 226) | ||
| Lowest | 1.0 | 1.0 |
| Low | 0.6 (0.18 to 1.95) | 0.6 (0.17 to 1.84) |
| Middle | 1.0 (0.25 to 3.71) | 0.6 (0.20 to 1.97) |
| High | 1.7 (0.48 to 5.64) | 1.0 (0.37 to 2.66) |