Table 4.
Preliminary results: DDIII May 15–July 15, 2010 Hierarchical Bayesian EG model parameter estimates.
| Derrick hand | Floorhand/roughneck | Crane operator | Roustabout | Operations technician or operator | ROV technician | IH-safety | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Parameter | Median | 95% CI | Median | 95% CI | Median | 95% CI | Median | 95% CI | Median | 95% CI | Median | 95% CI | Median | 95% CI |
| Intercept | −1.98 | (−4.76, 0.86) | −1.65 | (−4.67, 1.24) | −1.34 | (−3.51, 0.61) | −2.84 | (−4.29, −1.51) | −0.96 | (−3.86, 1.65) | −1.03 | (−2.49, 0.21) | −0.49 | (−1.73, 0.58) |
| Slope | 0.76 | (0.36, 1.17) | 0.72 | (0.33, 1.13) | 0.62 | (0.32, 0.95) | 0.91 | (0.69, 1.14) | 0.68 | (0.28, 1.09) | 0.64 | (0.44, 0.86) | 0.59 | (0.43, 0.78) |
| Correlation | 0.78 | (0.32, 0.97) | 0.64 | (0.27, 0.89) | 0.69 | (0.35, 0.88) | 0.70 | (0.57, 0.80) | 0.67 | (0.27, 0.91) | 0.94 | (0.77, 0.99) | 0.89 | (0.70, 0.96) |
| GSD of THC | 2.55 | (1.73, 8.50) | 4.63 | (2.72, 16.11) | 2.90 | (2.12, 5.21) | 3.09 | (2.63, 3.83) | 5.45 | (2.88, 25.05) | 3.24 | (2.08, 9.05) | 2.68 | (2.00, 4.57) |
| GSD of xylene THC | 1.76 | (1.38, 3.70) | 3.76 | (2.32,11.79) | 2.00 | (1.57, 3.39) | 2.82 | (2.40, 3.50) | 3.48 | (2.12, 12.38) | 1.31 | (1.19, 1.66) | 1.36 | (1.24, 1.61) |
| GSD of xylene | 2.64 | (1.80, 7.55) | 6.04 | (3.31, 20.47) | 2.68 | (1.95, 4.86) | 4.32 | (3.46, 5.80) | 5.87 | (3.02, 25.49) | 2.24 | (1.65, 4.55) | 1.95 | (1.63, 2.67) |
| AM of THC (ppb) | 1472 | (701, 12 168) | 3454 | (1170, 60 690) | 871 | (503, 2321) | 675 | (517, 944) | 2050 | (601, 98 761) | 852 | (420, 5030) | 889 | (554, 2016) |
| AM of xylene (ppb) | 42 | (20, 277) | 144 | (39, 3487) | 20 | (12, 50) | 35 | (24, 59) | 121 | (33, 4747) | 23 | (15, 57) | 32 | (24, 50) |