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International audienceIn this paper we revisit the mortality profiles of France and Italy in 2003 using the multiple-cause-of-death approach. The method leads to a substantial upward reassessment of the role played by certain conditions - e.g. diseases of the blood and diseases of the skin - in overall mortality. Regarding the associations of causes, we distinguish three patterns of pairwise joint occurrence of causes that are common to both countries. The numerous similarities that emerge from the comparison of the two countries are a positive signal of the reliability of the multiple-cause-of-death data

Objectives We investigate the reporting of obesity on death certificates in three countries (France, Italy, and the United States) with different levels of prevalence, and we examine which causes are frequently associated with obesity. Methods We use cause-of-death data for all deaths at ages 50–89 in 2010–2011. Since obesity may not be the underlying cause (UC) of death, we compute age- and sex- standardized death rates considering all mentions of obesity (multiple causes or MC). We use cluster analyses to identify patterns of cause-of-death combinations. Results Obesity is selected as UC in no more than 20% of the deaths with a mention of obesity. Mortality levels, whether measured from the UC or the MC, are weakly related to levels of prevalence. Patterns of cause-of-death combinations are similar across the countries. In addition to strong links with cardiovascular diseases and diabetes, we identify several less familiar associations. Conclusions Considering all mentions on the deaths certificates reduces the underestimation of obesity-related mortality based on the UC only. It also enables us to describe the various mortality patterns involving obesity.

Our research highlights several consequences of the conditions under study that could be targeted by public health policy. It also speaks to the existence of differences in diagnosis/certification practices that may explain differences in mortality levels.