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用DDP的方法对河南省1989年（77人）、1991年（793）成人膳食营养状况进行评价。先将被调查者按居住地分为城市、小城镇、郊区、农村四组，每组又按经济收入水平分为低、中、高三个阶层。结果显示：各收入阶层的城市居民膳食质量较好，但食用油摄入量超过了最大允许值。小城镇组得分明显低于城市组，但稍优于郊区和农村组。后三组的中、低收入者的膳食质量差，动物性及豆类食品摄入量低，食用油摄入量已达最大允许值。城乡居民膳食质量差距明显。各组内的得分依收入的高低顺减。被调查者的蛋白质和热量的摄入量均在RDA的印％以上。
The DDP method was used to evaluate the nutritional status of adults in 1989 (77 persons) and 1991 (793 adults) in Henan Province. First, the respondents are divided into four groups according to their places of residence: cities, towns, suburbs and rural areas. Each group is divided into three levels: low, medium and high according to the level of economic income. The results show that: the income of urban residents better diet, but the consumption of edible oil exceeds the maximum allowable value. Small town group score was significantly lower than the city group, but slightly better than the suburbs and rural groups. After the three groups of middle and low income people poor quality of food, animal and legumes low intake of edible oil intake has reached the maximum allowable value. The gap between urban and rural residents in the quality of food is obvious. The scores within each group are reduced by the level of income. The respondents’ protein and calorie intake were all above the RDA mark.