Average exposure (fgr/m3) | |||
---|---|---|---|
Length of exposure (years) | < 4 Cases/Controls OR (95% CI) | 4–6 Cases/Controls OR (95% CI) | ≥ 6 Cases/Controls OR (95% CI) |
< 32 | 10/41 1* | 41/100 1.67 (0.76 – 3.68) | 14/26 2.57 (0.95 – 6.92) |
≥ 32 | 45/120 1.61 (0.71 – 3.63) | 42/92 1.91 (0.84 – 4.34) | 20/26 3.30 (1.24 – 8.76) |
Total | 55/161 1* | 83/192 1.27 (0.84 – 1.91) | 34/52 2.08 (1.19 – 3.64) |