Estimation of urinary iodine excretion by iodine/creatinine ratio from morning spot urine in school-age children
作者单位：Department of Nutrition and Food HygieneSchool of Public HealthTianjin Medical University Department of Sanitary ChemistrySchool of Public HealthTianjin Medical University Tianjin Institution of EndocrinologyTianjin Medical University Shandong Institute for Endemic Disease Control and Research
会议名称：《第七届全国中西医结合营养学术会议》
会议日期：2016年
学科分类：1004[医学-公共卫生与预防医学(可授医学、理学学位)] 100403[医学-营养与食品卫生学] 10[医学]
关 键 词：24-h urine urinary iodine urinary creatinine iodine/creatinine ratio children
摘 要：Objective:To evaluate the validity of iodine/creatinine ratio(UI/Cr)from spot urines in estimating24-h urinary iodine excretion(24-h UIE)in school-age ***:A cross-sectional *** repeated collections of 24-h urine and morning spot urine samples were obtained within one month.24-h urinary iodine concentration(24-h UIC),24-h urinary creatinine concentration(24-h U-Cr),24-h urinary volume(24-h U-vol),morning spot urinary iodine concentration(MUIC)and morning spot urinary creatinine concentration(MU-Cr)were measured in all *** 24-h UIE was calculated by 24-h UIC multiplying 24-h U-vol,while estimated 24-h UIE was calculated by morning spot urinary iodine/creatinine ratio(MUI/Cr)multiplying 24-h urinary creatinine excretion(24-h UCrE).Setting:Ningjin and Lingxian Counties,Shandong,***:981 healthy school-age children Results:No significant differences were observed in MUI/Cr,24-h UIC and measured 24-h UIE between twice repeated ***/Cr,24-h UI/Cr and estimated 24-h UIE were strongly correlated with measured 24-h *** Kappa value a was 0.615 in first collection and 0.599 in second one,demonstrating a good agreement between estimated and measured 24-h *** 24-h UIE was slightly lower than measured 24-h UIE in both *** 24-h UIE and estimated 24-h UIE were significantly correlated with ***,no differences were observed in MUI/Cr and 24-h UI/Cr among different ***:Estimated 24-h UIE from morning spot urine could be a valid and reliable alternative for measured 24-h UIE from 24-h urine sample in evaluating individual iodine intake,even though there was 10%4%underestimation.