In Reply Our study¹ on inequalities in life expectancy found that a combination of socioeconomic and race/ethnicity factors, behavioral and metabolic risk factors, and health care factors could explain 74% of the variation in life expectancy among counties. We agree with Dr Mestral that other factors such as diet quality and housing conditions may play a role in explaining the remaining variation. This is an important area of future research and will require identifying appropriate county-level data sources that relate to these factors.

中文翻译：

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县级预期寿命不平等的考虑-答复

在答复中，关于预期寿命不平等的研究¹发现，社会经济因素和种族/民族因素，行为和代谢风险因素以及医疗保健因素的结合可以解释县间预期寿命差异的74％。我们同意Mestral博士的看法，饮食质量和居住条件等其他因素可能会在解释剩余差异方面发挥作用。这是未来研究的重要领域，将需要确定与这些因素有关的县级数据源。