Table 2.
The number of samples, the percentage of censoring, and the posterior medians of the AM (in ppm) and GSD (95% CI) for THC for broad job groups on the four rig vessels across four time periods (22 April 2010–30 September 2010).
| Job groups | N TP1a | % cens TP1a | AM_TP1a | GSD_TP1a | N TP1b | % cens TP1b | AM_TP1b | GSD_TP1b | N TP2 | % cens TP2 | AM_TP2 | GSD_TP2 | N TP3 | % cens TP3 | AM_TP3 | GSD_TP3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DDII | ||||||||||||||||
| All groups | 199 | 26 | 1.08 (0.80, 1.56) |
4.7 (4.0, 5.8) |
58 | 47 | 0.34 (0.22, 0.71) |
4.1 (3.0, 6.8) |
70 | 51 | 0.54 (0.28, 1.22) |
6.9 (4.5, 11.2) |
||||
| IH-safety | 9 | 44 | 0.72 (0.19, 4.01) |
7.7 (3.6, 11.7) |
||||||||||||
| Inside | 21 | 29 | 0.71 (0.37, 2.22) |
4.0 (2.6, 8.8) |
||||||||||||
| Outside crew | 96 | 24 | 1.24 (0.80, 2.28) |
5.2 (4, 7.2) |
40 | 45 | 0.29 (0.18, 0.62) |
3.7 (2.6, 6.5) |
42 | 52 | 0.27 (0.15, 0.73) |
4.7 (3.0, 9.7) |
||||
| Outside operations | 48 | 27 | 1.27 (0.71, 3.05) |
5.0 (3.6, 8.3) |
8 | 50 | 0.64 (0.17, 3.73) |
6.8 (3.0, 11.7) |
17 | 47 | 1.31 (0.44, 4.53) |
9.1 (5.2, 11.8) |
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| DDIII | ||||||||||||||||
| All groups | 88 | 33 | 5.21 (2.75, 11.02) |
7.5 (5.3, 11.0) |
218 | 18 | 0.95 (0.77, 1.21) |
3.4 (3.0, 4) |
49 | 41 | 0.34 (0.22, 0.65) |
3.6 (2.7, 5.8) |
75 | 55 | 0.28 (0.19, 0.48) |
3.9 (2.8, 6.2) |
| IH-safety | 19 | 11 | 0.85 (0.56, 1.67) |
2.6 (2, 4.2) |
9 | 11 | 0.74 (0.35, 3.52) |
3.3 (2.1, 8.7) |
20 | 55 | 0.38 (0.17, 1.44) |
5.1 (2.7, 10.8) |
||||
| Inside | 19 | 16 | 0.96 (0.51, 3.12) |
3.6 (2.5, 7.5) |
9 | 33 | 0.36 (0.17, 1.73) |
3.3 (1.8, 9.6) |
15 | 60 | 0.18 (0.09, 0.65) |
3.4 (1.9, 9.5) |
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| Outside crew | 52 | 38 | 3.70 (1.78, 9.34) |
7.7 (5.0, 11.5) |
138 | 17 | 0.91 (0.70, 1.26) |
3.4 (2.9, 4.2) |
22 | 55 | 0.16 (0.09, 0.45) |
3.1 (2.0, 8.4) |
24 | 42 | 0.30 (0.17, 0.84) |
3.6 (2.4, 8.2) |
| Outside operations | 32 | 28 | 6.59 (2.67, 19.72) |
7.5 (4.6, 11.5) |
31 | 26 | 1.12 (0.62, 2.94) |
4.2 (2.9, 7.5) |
7 | 43 | 0.42 (0.13, 2.70) |
5.4 (2.4, 11.4) |
6 | 50 | 0.50 (0.12, 3.45) |
6.9 (2.8, 11.7) |
| Enterprise | ||||||||||||||||
| All groups | 22 | 5 | 3.20 (1.69, 9.79) |
4.0 (2.8, 7.3) |
353 | 7 | 5.61 (4.27, 7.62) |
5.7 (5.0, 6.6) |
31 | 3 | 0.45 (0.36, 0.59) |
1.8 (1.6, 2.2) |
24 | 75 | 0.12 (0.07, 0.39) |
4.0 (2.2, 9.8) |
| IH-safety | 11 | 18 | 5.09 (1.36, 23.45) |
8.2 (4.4, 11.8) |
||||||||||||
| Inside | 7 | 0 | 0.95 (0.56, 2.82) |
2.1 (1.5, 5.2) |
||||||||||||
| Outside crew | 16 | 0 | 2.36 (1.37, 5.74) |
2.9 (2.1, 5.1) |
189 | 10 | 6.09 (4.17, 9.63) |
6.2 (5.2, 7.8) |
28 | 0 | 0.46 (0.38, 0.60) |
1.7 (1.5, 2.1) |
16 | 69 | 0.15 (0.07, 0.56) |
4.3 (2.2, 10.7) |
| Outside operations | 6 | 17 | 4.05 (0.80, 26.57) |
7.7 (3.8, 11.7) |
132 | 5 | 5.51 (3.79, 8.93) |
5.2 (4.3, 6.6) |
||||||||
| Q4000 | ||||||||||||||||
| All groups | 120 | 28 | 2.66 (1.54, 5.25) |
7.3 (5.6, 10.3) |
34 | 15 | 0.50 (0.36, 0.79) |
2.5 (2.0, 3.4) |
23 | 4 | 1.07 (0.60, 2.74) |
3.5 (2.6, 6.0) |
||||
| Outside crew | 69 | 32 | 2.15 (1.08, 4.93) |
7.5 (5.3, 11.3) |
32 | 12 | 0.51 (0.37, 0.77) |
2.4 (2.0, 3.3) |
20 | 5 | 1.14 (0.59, 3.14) |
3.8 (2.7, 7.3) |
||||
| Outside operations | 38 | 29 | 3.49 (1.47, 9.94) |
8.3 (5.1, 11.7) |
N, number of samples; % cens, percentage of censoring. Time Period 1a (22 April–14 May 2010) had limited measurements. The absence of a row for a particular broad job group indicates no measurements were collected or that it may have few measurements (N < 5) or level of censoring >80%.