目的 调查了解北京市4～12月龄婴幼儿喂养现状, 为婴幼儿营养干预提供科学依据。方法 采用分层整群抽样的方法, 在北京市城区和郊区分别抽取4～12月龄婴幼儿为调查对象, 通过问卷收集婴幼儿的基本情况、辅食添加等情况进行统计分析, 建立并计算4～12月龄婴儿的辅食喂养指数。结果 本次共调查900人, 城区431人, 郊区469人。辅食喂养指数包括膳食多样化分数(dietary diversity score, DDS)、膳食种类(food variety score, FVS)、辅食首添时间、配方奶首添时间四个部分。北京市4～6月龄和7～9月龄婴儿DDS、FVS和辅食喂养指数城区和郊区之间的差异有统计学意义。10～12月龄婴儿DDS、辅食喂养指数, 城区和郊区之间的差异有统计学意义。4～6月龄组和10～12月龄组与婴儿辅食喂养指数相关的因素是食物费用。7～9月龄组与婴儿辅食喂养指数相关的因素是食物费用和母亲文化。结论 辅食喂养指数可以综合评价婴幼儿辅食喂养情况, 但应用效度如何有待评价。

Objective To investigate the complementary feeding status of Beijing 4~12 month-old infant, and to provide a scientific basis for the infant nutrition intervention. Method Stratified cluster sampling method was used to extracted 4~12 months infants in Beijing suburb and urban, collected the information of infant food supplement to make statistical analysis through questionnaires, and calculated the complementary feeding index of infants. Results There were 900 infants, urban 431, suburb 469.The index included DDS, FVS, the first time of food and milk.For aged 4~6-month and 7~9-month infants, dietary diversity score (DDS), food variety score (FVS) and complementary feeding index had significant differences between urban and suburban infants.For aged 10~12-month infants, DDS and complementary feeding index had significant differences between urban and suburb.For aged 4~6-month and 10~12-month infants, the factor associated with complementary feeding index was the cost of food.7~9-month infants, the factor associated with complementary feeding index were the costs of food and mother's culture. Conclusion The complementary feeding index can evaluate complementary feeding of infants comprehensively, and the validity of the index should be evaluated.