Table 1 Baseline, follow-up and drop-out characteristics of male seafarers in two different shipping companies obtained through questionnaires and health examinations
| Â | Total | Company 1 | Company 2 | ||||||
|---|---|---|---|---|---|---|---|---|---|
Questionnaire data | Baseline questionnaire T1 | Follow-up questionnaire T2 | Drop-out | Baseline questionnaire T1 | Follow-up questionnaire T2 | Drop-out | Baseline questionnaire T1 | Follow-up questionnaire T2 | Drop-out |
|  | (N = 343) | (N = 209) | (N = 134) | (N = 89) | (N = 52) | (N = 37) | (N = 254) | (N = 157) | (N = 97) |
| Â | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) | N (%) |
Age (M/SD) | 42 (10.5) | 44 (10.3) | 41 (10.4) | 41 (10.7) | 42 (10.5) | 40 (11.1) | 43 (10.3) | 45 (10.4) | 41 (10.2) |
Men | 343 (95%) | 209 (96%) | 134 (94%) | 89 (85%) | 52 (88%) | 37 (80%) | 254 (100%) | 157 (99%) | 97 (100%) |
Officer rank | 214 (63%) | 148 (71%) | 77 (59%) | 65 (75%) | 42 (81%) | 24 (69%) | 149 (59%) | 106 (68%) | 53 (56%) |
Smokers | 144 (44%) | 75 (37%) | 64 (49%) | 36 (42%) | 15 (29%) | 16 (43%) | 108 (45%) | 60 (39%) | 48 (52%) |
Frequency of exercise level ≥ 3 times weekly at home | 82 (24%) | 57 (28%) | 30 (23%) | 16 (18%) | 12 (23%) | 6 (17%) | 66 (27%) | 45 (30%) | 24 (25%) |
Frequency of exercise level ≥ 3 times weekly at sea | 108 (32%) | 73 (35%) | 42 (32%) | 16 (19%) | 13 (25%) | 6 (17%) | 92 (37%) | 60 (39%) | 36 (37%) |
Frequency of exercise level < 1 time active weekly or never at home | 165 (49%) | 93 (46%) | 64 (50%) | 47 (54%) | 28 (54%) | 18 (50%) | 118 (48%) | 65 (43%) | 46 (50%) |
Frequency of exercise level < 1 time active weekly or never at sea | 164 (49%) | 83 (40%) | 72 (55%) | 50 (58%) | 27 (52%) | 22 (63%) | 114 (45%) | 56 (36%) | 50 (52%) |
Frequency of overeating ≥ 3 days weekly at home | 133 (40%) | 79 (38%) | 49 (39%) | 37 (43%) | 19 (37%) | 15 (42%) | 96 (40%) | 60 (39%) | 34 (37%) |
Frequency of overeating ≥ 3 days weekly at sea | 152 (47%) | 86 (42%) | 64 (51%) | 41 (47%) | 25 (49%) | 18 (50%) | 111 (47%) | 61 (40%) | 46 (51%) |
Frequency of eating high-sugar products ≥ 3 days weekly at home | 132 (40%) | 61 (30%) | 49 (38%) | 37 (43%) | 14 (27%) | 15 (42%) | 95 (39%) | 47 (31%) | 34 (37%) |
Frequency of eating high-sugar products ≥ 3 days weekly at sea | 170 (52%) | 86 (43%) | 65 (50%) | 46 (53%) | 23 (44%) | 19 (53%) | 124 (52%) | 63 (42%) | 45 (49%) |
| Â | Total | Company 1 | Company 2 | ||||||
Health profile data | Baseline health profile T1 | Follow-up health profile T2 | Drop-out | Baseline health profile T1 | Follow-up health profile T2 | Drop-out | Baseline health profile T1 | Follow-up health profile T2 | Drop-out |
|  | (N = 257) | (N = 153) | (N = 104) | (N = 75) | (N = 49) | (N = 26) | (N = 182) | (N = 104) | (N = 78) |
High physical fitness (age and gender standardized VO2submax test) | 69 (30%) | 71 (50%) | 24 (26%) | 19 (33%) | 23 (52%) | 6 (33%) | 50 (29%) | 48 (49%) | 11 (24%) |
Obesity (≥ BMI 30) | 64 (25%) | 42 (28%) | 25 (24%) | 20 (27%) | 14 (29%) | 10 (39%) | 44 (24%) | 28 (27%) | 15 (20%) |
High waist circumference (wc), male ≥94 cm | 163 (66%) | 96 (65%) | 58 (59%) | 52 (75%) | 33 (72%) | 16 (70%) | 111 (62%) | 63 (63%) | 42 (55%) |
Metabolic syndrome (wc ≥94 cm and 2 further risk factors) | 123 (50%) | 56 (37%) | 44 (42%) | 41 (55%) | 24 (49%) | 12 (46%) | 81 (45%) | 32 (31%) | 32 (41%) |