文章摘要
刘丽,陆爽,敖丽萍,刘军廷,程红,黄玮浩,杨轮,张广川,米杰,杨翌.生物电阻抗法和双能X线吸收法测量7~17岁儿童青少年体成分的一致性评价[J].中华流行病学杂志,2021,42(3):475-481
生物电阻抗法和双能X线吸收法测量7~17岁儿童青少年体成分的一致性评价
Consistency between bioelectrical impedance analysis and dual-energy X-ray absorptiometry for body composition measurement in children aged 7-17 years
收稿日期:2020-08-12  出版日期:2021-03-29
DOI:10.3760/cma.j.cn112338-20200812-01062
中文关键词: 生物电阻抗法;双能X线吸收法;去脂体重;脂肪量;一致性评价
英文关键词: Bioelectrical impedance analysis;Dual-energy X-ray absorptiometry;Fat-free mass;Fat mass;Consistency analysis
基金项目:国家自然科学基金(81874271,81973110)
作者单位E-mail
刘丽 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006  
陆爽 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006  
敖丽萍 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006  
刘军廷 首都儿科研究所流行病学研究室, 北京 100020  
程红 首都儿科研究所流行病学研究室, 北京 100020  
黄玮浩 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006  
杨轮 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006  
张广川 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006  
米杰 国家儿童医学中心儿童慢病管理中心, 首都医科大学附属北京儿童医院, 北京 100045  
杨翌 广东药科大学公共卫生学院流行病与卫生统计学系, 广州 510006 yangyigz@163.com 
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中文摘要:
      目的 评价生物电阻抗法(BIA)与双能X线吸收法(DXA)测量7~17岁儿童青少年体成分的一致性。方法 对1 431名儿童进行BIA和DXA检测。采用组内相关系数(ICC)和Bland-Altman分析评价方法间所测去脂体重和脂肪量的一致性。Bland-Altman分析在对数变换的数据中进行。结果 男、女生中BIA与DXA所测去脂体重的ICC分别为0.986和0.974,脂肪量的ICC则分别为0.854和0.926。男生中BIA与DXA的去脂体重比值均值及一致性界限(LoA)分别为1.04和0.95~1.14,女生中则为1.02和0.90~1.15。男、女生中去脂体重的LoA范围均随年龄增长而变窄。男、女生中两种方法的脂肪量比值LoA范围均较宽,分别为0.40~1.27和0.48~1.48。此外,男、女生中均可看到各成分的比值LoA范围随BMI等级增高而变窄。结论 BIA所测去脂体重与DXA的一致性良好,但BIA测量脂肪量的误差较大。肥胖儿童的BIA与DXA一致性优于消瘦和正常体重儿童。
英文摘要:
      Objective To evaluate the consistency between bioelectrical impedance analysis (BIA) and dual-energy X-ray absorptiometry (DXA) in the measurement of body composition in children and adolescents aged 7-17 years. Methods Fat-free mass (FFM) and fat mass (FM) were measured by both BIA and DXA in 1 431 children. The consistency between the methods was evaluated by intra-class correlation coefficients (ICCs) and Bland-Altman analysis. Logarithmic transformation of both measurements was performed before Bland-Altman analysis. Results The ICCs for FFM were 0.986 and 0.974 and ICCs for FM were 0.854 and 0.926 in boys and girls respectively. In boys, the mean ratio of FFMs by BIA and DXA was 1.04, with limits of Agreement (LoA) of 0.95-1.14, and in girls, the mean ratio of FFMs by BIA and DXA was 1.02, with the LoA of 0.90-1.15. The LoA of FFM became narrower with age in both boys and girls. Both boys and girls had the wide LoAs for FM (0.40-1.27 and 0.48-1.48, respectively). Additionally, the LoA ranges for FFM and FM narrowed with the increase of BMI level in both boys and girls. Conclusion For all children, BIA showed good consistency with DXA for FFM, whereas significant errors occurred in FM measurement. The consistency between BIA and DXA was better for obese children than for underweight or normal-weight children.
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