Cardiovascular risk factors in seamen and fishermen: review of literature

Abstract

Background and aim: The aim of this study was to evaluate the prevalence of risk factors for cardiovascular disease among sailors and their evolution over time.

Materials and methods: This study is a review of the literature from Medline® database and the Medicina Maritima journal. With prevalence studies, the overall prevalence was calculated; 2 groups were created according to the study period (1990s vs. 2000s) and compared by c2 test with Mantel-Haenszel correction.

Results: Eighteen articles were selected (total: 57,473 European sailors and 327 non-European sailors). Smoking prevalence varied between 37.3 and 72.3%; overweight prevalence between 27.9 and 66.5%; hypertension was between 8.2 and 49.7%; hypercholesterolaemia ("high blood level of cholesterol") variedbetween 25.1 and 42% of the populations studied; between 3.3 and 9.3% of the populations studied suffered from diabetes. Two studies showed a 10-year cardiovascular risk comparable to that of the general population. After calculating with similar studies, the prevalences were 61.4% for smoking, 60.9% for overweight, 30.1% for hypertension, 34.6% for high cholesterol, and 3.6% for diabetes. Smoking prevalence was significantly lower in 2000s (45.4% vs. 61.3%, p < 0.01), those of overweight, hypertension and hypercholesterolaemia were higher (64.1% vs. 47.1%, p < 0.01, and 42.1% vs. 14.8%, p < 0.01, 42.0%vs. 33.9%, p = 0.02).

Conclusions: Modifiable risk factors are the most studied. Smoking tended to decrease in the 2000s.