Duration of exposure | ||||
---|---|---|---|---|
≥1 month | ≥3 years | |||
Type of exposure | Cases/controls | OR (95% CI) | Cases/controls | OR (95% CI) |
Occupation | ||||
Deck officers | 14/28 | 1.64 (0.80 to 3.36) | 10/22 | 1.43 (0.64 to 3.22) |
Engine officers | 12/33 | 1.11 (0.54 to 2.31) | 9/20 | 1.41 (0.61 to 3.28) |
Radio officers | 2/6 | 1.00 (0.20 to 5.09) | 1/3 | 1.00 (0.10 to 9.79) |
Deck crew | 20/67 | 0.85 (0.46 to 1.56) | 9/31 | 0.85 (0.38 to 1.90) |
Engine crew | 16/53 | 0.87 (0.46 to 1.67) | 7/19 | 1.12 (0.45 to 2.80) |
Catering | 16/52 | 0.90 (0.47 to 1.72) | 9/9 | 3.33 (1.26 to 8.82) |
Type of ship | ||||
Dry cargo vessel | 47/137 | 1.12 (0.58 to 2.14) | 29/80 | 1.16 (0.66 to 2.06) |
Tanker | 28/74 | 1.24 (0.70 to 2.21) | 11/21 | 1.69 (0.77 to 3.74) |
Deck personnel | 12/37 | 0.97 (0.47 to 1.99) | 7/12 | 1.84 (0.69 to 4.9) |
Engine personnel | 12/30 | 1.25 (0.60 to 2.61) | 3/7 | 1.30 (0.33 to 5.19) |
Passenger ship | 21/73 | 0.80 (0.44 to 1.45) | 7/16 | 1.35 (0.53 to 3.45) |
Icebreaker | 3/14 | 0.63 (0.17 to 2.25) | 1/4 | 0.75 (0.08 to 6.80) |
Deck personnel | 2/7 | 0.85 (0.17 to 4.21) | 0/3 | – |
Engine personnel | 1/6 | 0.49 (0.06 to 4.17) | 1/1 | 3.03 (0.19 to 49.20) |
Other | 10/27 | 1.13 (0.51 to 2.49) | 2/1 | 6.16 (0.55 to 69.2) |