METHODS: 8943 individuals were collected to establish the RIs. After using different data cleaning steps and checking whether these data should be divided according to age and gender based on multiple linear regression and variance component analyses, indirect RIs were calculated using specific Excel spreadsheets or R-packages software.
RESULTS: A total of 2004 records were eligible. For vitamin A, the RIs obtained were (1.11 - 2.68) µmol/L, (1.13 - 2.70) µmol/L, (1.13 - 2.71) µmol/L, and (1.17 - 2.66) µmol/L using the Bhattacharya, Hoffmann, Kosmic and RefineR approaches, respectively. For vitamin E, these intervals were (17.3 - 49.9) µmol/L (Bhattacharya), (17.3 - 48.9) µmol/L (Hoffmann), (19.6 - 50.3) µmol/L (Kosmic), and (19.4 - 50.9) µmol/L (RefineR). In all cases, the RIs were comparable.
CONCLUSIONS: Suitable RIs for vitamins A and E were calculated using four indirect methods that are suitable and adapted to our population\'s demographic characteristics.
方法:收集8943个个体以建立RI。在使用不同的数据清洗步骤,并根据多元线性回归和方差成分分析检查这些数据是否应按年龄和性别进行划分后,使用特定的Excel电子表格或R软件包软件计算间接RI。
结果:总共有2004年的记录合格。对于维生素A,获得的RI为(1.11-2.68)μmol/L,(1.13-2.70)µmol/L,(1.13-2.71)µmol/L,和(1.17-2.66)µmol/L使用Bhattacharya,霍夫曼,Kosmic和RefineR方法,分别。对于维生素E,这些间隔为(17.3-49.9)µmol/L(Bhattacharya),(17.3-48.9)µmol/L(霍夫曼),(19.6-50.3)µmol/L(Kosmic),和(19.4-50.9)µmol/L(RefineR)。在所有情况下,RIs具有可比性。
结论:使用四种间接方法计算了维生素A和E的合适RIs,这些方法适用于我们人群的人口统计学特征。