目的评价一种网络膳食评估工具——膳食小助手(eat-right assistant,ERA)的准确性。方法选择上海某公司的育龄期妇女以及在苏州市某镇卫生院进行常规产检的孕妇和带婴幼儿体检的哺乳期妇女为研究对象,对其先后进行膳食小助手和24小时膳食回顾法的连续3日膳食调查。整理膳食小助手调查所得的能量、营养素和各类食物摄入量数据,与24小时膳食回顾法的相应调查结果进行比较。结果共90位妇女完成3天的调查。除水果摄入量外,两种方法所得能量、五种营养素和其他各类食物摄入量差异均无统计学意义。相关系数范围为0.61~0.93(平均0.75),从中度相关到强相关。一致性检验显示两种方法所得结果一致性状况良好。结论该工具准确性良好,有较大的潜力用于推广和应用。 Objective To evaluate the accuracy of a network-based dietary assessment tool, the eat-right assistant (ERA). Methods The women of childbearing age in Shanghai and the pregnant women who took routine checkups in a township hospital in Suzhou City and the lactating women with infants physical examination were selected as the study subjects. 3-day meal survey. The energy, nutrients, and various food intake data collected by the food helper were compared with the corresponding findings of the 24-hour meal review. A total of 90 women completed the three-day survey. In addition to the fruit intake, the two methods of energy, five nutrients and other types of food intake differences were not statistically significant. The correlation coefficients ranged from 0.61 to 0.93 (mean 0.75), from moderately correlated to strongly correlated. Consistency tests showed good agreement between the two methods. Conclusion The tool has good accuracy and great potential for promotion and application.