基于线性混合模型树在体质指数纵向轨迹中的应用  

Application of Linear Mixed Model Tree in Longitudinal Trajectory of Body Mass Index

作　　者：臧一腾 陈思臻 陆贝尔 缪鹏程 马溶基 陈炳为[1] Zang Yiteng;Chen Sizhen;Lu Beier(Department of Epidemiology and Health Statistics,School of Public Health,Southeast University 210009,Nanjing)

机构地区：[1]东南大学公共卫生学院流行病与卫生统计系,210009

出　　处：《中国卫生统计》2024年第1期41-44,共4页Chinese Journal of Health Statistics

摘　　要：目的 探讨江苏省成年人体质指数纵向变化轨迹及分类。方法 基于中国营养健康调查数据,使用线性混合模型树探究江苏省18~65岁人群体质指数的变化轨迹及其分类情况。结果 线性混合模型树生成了13个节点,树的深度为6,分类节点为基线BMI、平均摄入卡路里、基线年龄。结论 线性混合模型树可以识别体质指数的变化轨迹,拓展了纵向数据动态变化的研究方法。Objective To understand the trajectory and classification of adult body mass index(BMI)in Jiangsu Province.Methods Based on China Health and Nutrition Survey,this study used the linear mixed model tree to explore the trajectory and classification of BMI of people aged 18-65 in Jiangsu Province.Results The linear mixed model tree had 13 nodes and the depth was 6.The classification nodes were baseline BMI,average calorie intake and baseline age.Conclusion The linear mixed model tree can identify the trajectory of BMI and expand the research method of longitudinal data.

关 键 词：身体质量指数 线性混合模型树 纵向数据 

分 类 号：R195.1[医药卫生—卫生统计学]