Fang Hongyun, Huang Kun, Guo Qiya, Yu Dongmei, Xu Xiaoli, Ju Lahong, Zhao Liyun
NHC Key Laboratory of Public Nutrition and Health, National Institute for Nutrition and Health, China CDC, Beijing 100050, China.
National Institute for Nutrition and Health, China CDC, Beijing 100050, China.
Wei Sheng Yan Jiu. 2024 Jul;53(4):519-526. doi: 10.19813/j.cnki.weishengyanjiu.2024.04.001.
To compare the differences in estimated food, energy, and nutrient intakes between the consecutive 3 days 24-hour dietary recall(24HR)(referred to as the 3-day method) and consecutive 2 days 24HR(referred to as the 2-day method) to provide a basis for the use of consecutive 2 days 24HR in China nutrition surveillance.
Using objective sampling to select participants in northern and southern provinces, dietary data were obtained through consecutive 3 days 24HR, and the average intakes of food, energy and nutrients were calculated for three days from Thursday to Saturday and two days on Friday and Saturday, respectively. The 3-day method was considered as the reference standard method to evaluate the performance of the 2-day method for estimating food, energy and nutrient intakes.
Among 778 participants aged 18-60 years in urban and rural areas of two provinces, the errors of the mean and median of 2-day method for estimating the intake of four major food categories less than 6% compared with the 3-day method, and there were significant equivalencies(P<0.025) and no significant differences in four major food categories group(P>0.05). Of the 24 food groups estimated by the 2-day method, 17 had mean errors within 5%, the largest error was in animal offal(13.45%) and the smallest in fruit(0.15%), and there were significant equivalencies(P<0.025) and no significant differences in seven food groups(P>0.05). For energy and nutrients, the mean and median errors of energy were less than 0.5% and there were significant equivalencies(P<0.025) and no significant differences for energy(P>0.05). Among the 25 nutrients, except sodium, iodine and vitamin E, the mean and median errors of the other 22 nutrients were less than 5%, and there were significant equivalencies(P<0.025) and no significant differences in 16 nutrients(P>0.05).
There was little difference between the two survey method in assessing the intake of high consumption frequency foods, energy and most nutrients at group level, the 2-day method can be used as an alternative to the 3-day method to collect dietary intake data with high consumption rates in the population.
比较连续3天24小时膳食回顾法（24HR）（简称3天法）与连续2天24HR（简称2天法）在估计食物、能量和营养素摄入量方面的差异，为2天24HR在中国营养监测中的应用提供依据。
采用目标抽样法选取南北省份的参与者，通过连续3天24HR获取膳食数据，分别计算周四至周六3天以及周五和周六2天的食物、能量和营养素平均摄入量。以3天法作为参考标准方法，评估2天法在估计食物、能量和营养素摄入量方面的表现。
在两个省份城乡地区的778名18 - 60岁参与者中，2天法估计四大类食物摄入量的均值和中位数误差与3天法相比小于6%，四大类食物组存在显著等效性（P<0.025）且无显著差异（P>0.05）。2天法估计的24个食物组中，17个组的均值误差在5%以内，最大误差在动物内脏（13.45%），最小误差在水果（0.15%），7个食物组存在显著等效性（P<0.025）且无显著差异（P>0.05）。对于能量和营养素，能量的均值和中位数误差小于0.5%，存在显著等效性（P<0.025）且无显著差异（P>0.05）。在25种营养素中，除钠、碘和维生素E外，其他22种营养素的均值和中位数误差小于5%，16种营养素存在显著等效性（P<0.025）且无显著差异（P>0.05）。
两种调查方法在群体水平上评估高消费频率食物、能量和大多数营养素摄入量时差异不大，2天法可作为3天法的替代方法，用于收集人群中高消费率的膳食摄入数据。
