1 (0.09–0.88 mg·m−3) | Reference=0 (lowest exposed group) | Reference=0 (lowest exposed group) | Reference=0 (lowest exposed group) |
2 (0.89–1.55 mg·m−3) | −0.20 (−0.44–0.05) | −0.09 (−0.35–0.17) | −0.02 (−0.14–0.10) |
3 (1.56–2.24 mg·m−3) | −0.40 (−0.65–−0.15) | −0.30 (−0.57–−0.03) | −0.05 (−0.17–0.08) |
4 (2.25–3.35 mg·m−3) | −0.61 (−0.86–−0.36) | −0.58 (−0.86–−0.31) | 0.00 (−0.12–0.13) |
5 (3.36–14.6 mg·m−3) | −0.84 (−1.10–−0.57) | −0.59 (−0.87–−0.31) | −0.15 (−0.28–−0.03) |
Administration | −0.42 (−0.74–−0.10) | −0.47 (−0.81–−0.13) | −0.01 (−0.17–0.15) |