Study plant ID | Exposure zone group | Paired samples (n) | Concurrent samples (n) | Paired samples | Concurrent samples | Combined estimates | ||||||
PCM/imp ratio* | 95% LCL | 95% UCL | PCM/imp ratio | 95% LCL | 95% UCL | PCM/imp ratio | 95% LCL | 95% UCL | ||||
1 | Prep-card | 12 | 40 | 5.24 | 3.31 | 7.60 | 4.45 | 3.28 | 6.03 | 4.77 | 4.16 | 5.37 |
1 | Spin-twist | 12 | 58 | 3.09 | 1.82 | 4.69 | 2.47 | 1.51 | 3.85 | 2.73 | 2.20 | 3.27 |
1 | Weave-product | 7 | 52 | 2.63 | 0.23 | 7.60 | 1.52 | 0.88 | 2.45 | 1.60 | 0.42 | 2.78 |
3 | Prep-card | 30 | 149 | 3.84 | 2.64 | 5.25 | 8.78 | 6.99 | 10.88 | 5.52 | 4.95 | 6.09 |
3 | Spin-twist | 40 | 131 | 1.54 | 0.92 | 2.31 | 4.52 | 3.27 | 6.07 | 2.60 | 2.13 | 3.07 |
3 | Weave-product | 46 | 75 | 6.40 | 4.46 | 8.71 | 5.66 | 3.15 | 9.62 | 6.16 | 5.42 | 6.89 |
4 | Prep-card | 15 | 85 | 8.72 | 6.25 | 11.59 | 7.23 | 5.26 | 9.71 | 8.04 | 7.37 | 8.71 |
4 | Spin-twist | 18 | 80 | 8.48 | 6.57 | 10.73 | 4.90 | 3.37 | 6.81 | 7.02 | 6.46 | 7.58 |
4 | Weave-product | 27 | 120 | 9.16 | 7.20 | 11.35 | 4.32 | 3.24 | 5.72 | 6.98 | 6.47 | 7.49 |
*PCM fibres>5 μm/ml per MPPCF.
Imp, impinger; LCL, lower confidence limit; MPPCF, millions of particles per cubic foot of air; PCM, phase contract microscopy; UCL, upper confidence limit.