Duration of exposure | ||||
---|---|---|---|---|
≥1 month | ≥3 years | |||
Type of exposure | Cases/controls | OR (95% CI) | Cases/controls | OR (95% CI) |
Occupation | ||||
Deck officers | 18/37 | 1.59 (0.85 to 2.99) | 14/31 | 1.43 (0.72 to 2.84) |
Engine officers | 11/47 | 0.66 (0.32 to 1.33) | 8/41 | 0.54 (0.24 to 1.21) |
Radio officers | 1/2 | 1.51 (0.14 to 16.8) | 1/2 | 1.51 (0.14 to 16.8) |
Deck crew | 25/68 | 1.15 (0.66 to 1.99) | 9/25 | 1.09 (0.49 to 2.44) |
Engine crew | 21/66 | 0.94 (0.53 to 1.66) | 11/24 | 1.43 (0.67 to 3.07) |
Catering | 10/55 | 0.48 (0.23 to 1.00) | 4/10 | 1.21 (0.37 to 3.97) |
Type of ship | ||||
Dry cargo vessel | 49/155 | 0.87 (0.52 to 1.46) | 38/100 | 1.26 (0.76 to 2.10) |
Tanker | 30/89 | 1.02 (0.61 to 1.71) | 10/20 | 1.57 (0.70 to 3.51) |
Deck personnel | 13/32 | 1.26 (0.63 to 2.54) | 7/8 | 2.78 (0.98 to 7.92) |
Engine personnel | 14/51 | 0.79 (0.41 to 1.51) | 3/11 | 0.81 (0.22 to 2.98) |
Passenger ship | 26/55 | 1.62 (0.93 to 2.81) | 5/12 | 1.27 (0.43 to 3.71) |
Icebreaker | 2/10 | 0.59 (0.13 to 2.75) | 0/3 | – |
Other | 11/24 | 1.43 (0.67 to 3.07) | 3/5 | 1.83 (0.43 to 7.84) |