Estimates from Poisson regression analysis of relative risk of having an notified notifiable accident not causing permanent disability of 5% or more or an accident causing permanent disability or death (different types of cargo ships only, for passenger ships see table 5)
| Notified notifiable accidents not causing disability of 5% or more | Accidents causing permanent disability of ≥5% | |||
|---|---|---|---|---|
| Risk factor | Cases | Adjusted* RR (95% CI) | Cases | Adjusted* RR (95% CI) |
| *Adjusted for all other variables presented in the table. | ||||
| Age at time of accident (y): | (p=0.004) | (p<0.001) | ||
| < 25 | 223 | 1.00 (reference category) | 17 | 1.00 (reference category) |
| 25–34 | 401 | 1.18 (0.99 to 1.40) | 50 | 1.77 (0.98 to 3.17) |
| 35–44 | 363 | 1.22 (1.01 to 1.47) | 37 | 1.49 (0.80 to 2.78) |
| 45–54 | 242 | 1.02 (0.84 to 1.24) | 67 | 3.26 (1.82 to 5.83) |
| ≥55 | 50 | 0.76 (0.55 to 1.04) | 17 | 2.71 (1.32 to 5.56) |
| Occupation on board: | (p<0.001) | (p=0.01) | ||
| Navigation officers | 131 | 1.00 (reference category) | 43 | 1.00 (reference category) |
| Ship's engineers | 171 | 1.96 (1.56 to 2.47) | 35 | 1.48 (0.94 to 2.32) |
| Ratings, deck | 720 | 5.42 (4.45 to 6.59) | 75 | 2.29 (1.51 to 3.48) |
| Ratings, engine | 96 | 3.52 (2.67 to 4.65) | 10 | 1.88 (0.91 to 3.89) |
| Galley crew | 65 | 1.95 (1.44 to 2.63) | 12 | 1.14 (0.60 to 2.18) |
| Catering crew | 35 | 2.14 (1.46 to 3.13) | 6 | 1.66 (0.68 to 4.03) |
| Other crew members | 61 | 3.09 (2.24 to 4.26) | 7 | 2.09 (0.90 to 4.85) |
| Ship type: | (p<0.001) | (p<0.001) | ||
| Container ships | 266 | 1.00 (reference category) | 17 | 1.00 (reference category) |
| Dry cargo | 222 | 1.24 (1.03 to 1.49) | 30 | 2.85 (1.54 to 5.27) |
| Coasters | 240 | 0.98 (0.81 to 1.18) | 59 | 4.38 (2.49 to 7.70) |
| Roll on roll off | 128 | 1.97 (1.58 to 2.45) | 15 | 3.87 (1.89 to 7.90) |
| Tankers, oil, chemical | 230 | 1.29 (1.08 to 1.55) | 30 | 2.82 (1.54 to 5.16) |
| Tankers, gas | 51 | 0.61 (0.45 to 0.83) | 10 | 1.92 (0.87 to 4.23) |
| Other ships | 142 | 1.07 (0.86 to 1.32) | 27 | 3.32 (1.77 to 6.21) |
| Nationality: | (p<0.001) | (p<0.001) | ||
| Danish citizens | 905 | 1.00 (reference category) | 143 | 1.00 (reference category) |
| Foreigners | 374 | 0.54 (0.47 to 0.63) | 45 | 0.49 (0.33 to 0.74) |
| Change of ship since last employment period: | (p=0.193) | (p=0.289) | ||
| Change of ship | 621 | 1.00 (reference category) | 89 | 1.00 (reference category) |
| Same ship as last time | 339 | 0.91 (0.79 to 1.05) | 61 | 0.78 (0.56 to 1.10) |
| No information | 319 | 0.89 (0.77 to 1.03) | 38 | 0.80 (0.53 to 1.19) |
| Time aboard when accident took place (days): | (p<0.001) | (p=0.034) | ||
| 1–15 | 232 | 1.00 (reference category) | 42 | 1.00 (reference category) |
| 16–30 | 176 | 0.87 (0.71 to 1.05) | 22 | 0.60 (0.36 to 1.01) |
| 31–60 | 344 | 1.01 (0.85 to 1.19 | 51 | 0.85 (0.56 to 1.28) |
| 61–90 | 201 | 0.86 (0.71 to 1.04) | 30 | 0.75 (0.47 to 1.21) |
| >90 | 326 | 0.62 (0.52 to 0.75) | 43 | 0.51 (0.33 to 0.81) |