The association of obesity with mortality was investigated in population-based samples of Micronesian Nauruans (n=1,400), Melanesian Fijians (n=1,279), and Indian Fijians (n=1,182), over 10 years from 1982 in Nauru, and 11 years from 1980 in Fiji.
At the end of follow-up, vital status was known for all Nauruans and all but 3.5% of Fijians.
Mortality rates were higher in Nauru than Fiji, and in Melanesians than Indians.
The mean body mass index of decedents was similar to or less than (Nauruan men, p<0.001) that of survivors in each sex-ethnic group.
Crude mortality rates showed an inverse relation with body mass index in Nauruan men, with inconsistent relations in other sex-ethnic groups.
After stratification by diabetes status, there was no relation between mortality and obesity in nondiabetic subjects, but an inverse relation was observed among diabetic subjects in each population.
These findings persisted even after the exclusion of subjects who died within the first 2 years of follow-up.
After controlling for age, smoking, and diabetes status in Cox proportional hazard models, body mass index (as a continuous variable) was not related to mortality in any sex/ethnic group and tended to be negatively associated with mortality risk.
Interactions of body mass index with age, smoking, and diabetes status were not significant.
Mortality risk was significantly increased in older subjects and in diabetic subjects, and cigarette smoking also increased risk in s...
Mots-clés Pascal : Mortalité, Homme, Obésité, Ethnie, Nauru, Polynésie, Océanie, Fidji, Mélanésie, Epidémiologie, Etude longitudinale, Indice masse corporelle, Santé publique, Etat nutritionnel, Trouble nutrition
Mots-clés Pascal anglais : Mortality, Human, Obesity, Ethnic group, Nauru Island, Polynesia, Oceania, Fiji, Melanesia, Epidemiology, Follow up study, Body mass index, Nutritional status, Nutrition disorder
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Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0171858
Code Inist : 002B22B. Création : 199608.