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Table 1 Baseline, follow-up and drop-out characteristics of male seafarers in two different shipping companies obtained through questionnaires and health examinations

From: Health promotion in the Danish maritime setting: challenges and possibilities for changing lifestyle behavior and health among seafarers

  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)
  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%)
  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%)