By controlling for individual and environmental influences on weight, such as income and health, they then measure whether food-price changes affect body-mass index (BMI).
如果不考虑诸如收入和健康这些影响体重的个人和环境因素的话，作者估量出了食品价格变动是否会影响体重指数。
According to types of commodity, it can be divided into goods price index of an individual event, the classification price index of the goods and total index.
按商品种类不同，分为单项商品价格指数、商品类别价格指数和总指数。
According to types of commodity, it can be divided into goods price index of an individual event, the classification price index of the goods and total index.
按商品种类不同，分为单项商品价格指数、商品类别价格指数和总指数。
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