Abstract: 【Objective】 To understand the rate of supplementary of vitamin A of children under three years in 45 counties of western region of China and explore its spatial factors from communities in order to provide a valuable reference to related work carried out in the future. 【Methods】 Descriptive statistics,hypothesis testing and rank correlation were used to analyze the data of the supplementary of vitamin A and its possible from the field survey database,and spatial data analysis was done. 【Results】 The rate of supplementary of vitamin A of 10 provinces were from 52.29%(378/719)to 81.29%(239/294),and the rate of supplementary of vitamin A of 45 counties were from 39.58%(57/144)to 91.49%(215/235),of which 20 counties the rate were less than 70%.The hypothesis testing showed that there was statistically significant difference among the provinces and counties.Rank correlation analysis showed that only "the village population in the end of last year," and "the number of children under three years old in the end of last year," had negative rank correlation with the rate of supplementary of vitamin of children under three years old. 【Conclusion】 The rate of supplementary of vitamin A of children under three years old is still not satisfied and it is not found that spatial distances impact on the rate of supplementary of vitamin A.

Key words: children under three years old, vitamin A, the rate of supplementary

摘要： 【目的】 了解西部45县3岁以下儿童的维生素A普服情况。从社区方面探讨其空间影响因素,为今后相关工作的开展提供有价值的参考。 【方法】 通过统计描述和比较及秩相关分析法对3岁以下儿童维生素A普服情况及可能的影响指标进行分析。 【结果】 10个省普服率在52.29%(378/719)到81.29%(239/294)之间,45个县普服率在39.58%(57/144)到91.49%(215/235)之间,其中有20个县普服率不到70%。各省、县间的差异均有统计学意义。秩相关分析结果显示仅有“上年底村人口数”、“上年3岁以下儿童数”与3岁以下儿童的维生素A普服率有负相关。 【结论】 西部45县3岁以下儿童的维生素A普服率偏低,尚未发现空间距离对儿童维生素A普服率影响。

关键词: 3岁以下儿童, 维生素A, 普服率