Table 4.
The number of samples, the percentage of censoring, and the posterior medians of the AM (in ppb) and GSD (95% CI) for ethylbenzene 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 | 77 | 5.82 (3.90, 9.83) |
6.6 (4.8, 9.8) |
58 | 57 | 7.07 (3.96, 16.74) |
5.6 (3.7, 9.9) |
70 | 33 | 7.49 (5.47, 11.61) |
3.2 (2.6, 4.4) |
||||
| IH-safety | ||||||||||||||||
| Outside crew | 96 | 73 | 8.02 (4.42, 16.55) |
7.7 (5.1, 11.4) |
40 | 53 | 8.38 (4.21, 23.04) |
5.8 (3.7, 10.6) |
42 | 29 | 8.5 (5.59, 15.60) |
3.4 (2.6, 5.1) |
||||
| Outside operations | 48 | 75 | 4.98 (2.45, 12.92) |
6.2 (3.8, 11.1) |
8 | 63 | 3.53 (0.72, 20.69) |
7.1 (3.1, 11.7) |
17 | 53 | 6.94 (2.54, 27.92) |
6.6 (3.3, 11.6) |
||||
| DDIII | ||||||||||||||||
| All groups | 88 | 53 | 36.82 (22.35, 76.70) |
5.5 (3.8, 9.2) |
218 | 28 | 12.89 (10.31, 16.86) |
3.7 (3.2, 4.4) |
49 | 31 | 10.97 (6.53, 24.42) |
4.5 (32., 7.4) |
75 | 45 | 6.05 (4.32, 9.75) |
3.5 (2.8, 5.0) |
| IH-safety | 19 | 11 | 8.32 (5.57, 15.32) |
2.4 (1.8, 3.8) |
9 | 11 | 14.91 (5.38, 77.04) |
4.6 (2.7, 10.5) |
20 | 40 | 6.15 (3.32, 17.98) |
3.6 (2.3, 8.2) |
||||
| Inside | 19 | 5 | 11.40 (8.12, 18.16) |
2.1 (1.8, 2.9) |
9 | 11 | 24.04 (9.65, 105.03) |
4.0 (2.5, 9.2) |
15 | 47 | 6.99 (3.22, 25.96) |
4.2 (2.5, 9.8) |
||||
| Outside crew | 52 | 54 | 32.54 (18.41, 83.04) |
5.3 (3.4, 10) |
138 | 35 | 12.76 (9.31, 19.08) |
4.3 (3.5, 5.5) |
22 | 45 | 6.3 (2.72, 21.98) |
5.5 (3.1, 11.0) |
24 | 42 | 8.51 (4.09, 25.65) |
5.0 (3.2, 9.6) |
| Outside operations | 32 | 56 | 44.68 (19.16, 128.37) |
7.4 (4.2, 11.6) |
31 | 32 | 12.18 (6.65, 32.81) |
4.4 (2.9, 8.1) |
7 | 29 | 7.29 (2.03, 43.84) |
5.5 (2.7, 11.3) |
6 | 67 | 3.43 (0.67, 22.15) |
5.9 (2.8, 11.5) |
| Enterprise | ||||||||||||||||
| All groups | 22 | 68 | 14.19 (4.91, 48.44) |
8.5 (4.7, 11.8) |
353 | 53 | 22.02 (15.48, 32.98) |
8.0 (6.6, 9.9) |
||||||||
| IH-safety | 11 | 64 | 10.64 (2.45, 53.26) |
9.3 (5.1, 11.9) |
||||||||||||
| Outside crew | 16 | 75 | 7.84 (2.42, 31.16) |
6.5 (3.7, 11.4) |
189 | 53 | 26.96 (16.30, 44.87) |
9.6 (7.2, 11.8) |
||||||||
| Outside operations | 6 | 50 | 14.31 (2.30, 106.07) |
8.3 (3.9, 11.8) |
132 | 48 | 17.83 (11.28, 32.03) |
6.4 (5.1, 8.6) |
||||||||
| Q4000 | ||||||||||||||||
| All groups | 120 | 66 | 10.73 (6.04, 20.38) |
8.8 (5.9, 11.7) |
34 | 71 | 2.42 (1.38, 5.49) |
3.8 (2.5, 7.9) |
23 | 78 | 1.88 (0.83, 5.24) |
4.3 (2.5, 10.2) |
||||
| Outside crew | 69 | 70 | 11.62 (5.69, 24.93) |
9.4 (6.1, 11.9) |
32 | 69 | 2.52 (1.44, 5.58) |
3.6 (2.4, 7.6) |
20 | 80 | 1.83 (0.72, 5.66) |
4.7 (2.6, 10.6) |
||||
| Outside operations | 38 | 66 | 4.64 (2.23, 13.00) |
5.9 (3.3, 11.2) |
See footnote, Table 2 for definitions.