内脏脂肪指数影响因素的多元线性逐步分析

Multiple linear regression of factors affecting VAI

目的分析内脏脂肪指数(VAI)与体格指标的相关关系,建立线性回归方程,为有关慢性病的防治提供科学依据。方法整群随机抽取广东省大学生1 256名,其中男430名,女826名。测定身高(H)、体重(W)、腰围(WC)、臀围(HC)、上臂围(UAC)、肱三头肌部皮脂厚度(TSF)、肩胛下角皮脂厚度(SSF)和腹部皮脂厚度(ASF)以及VAI;用Pearson相关分析探索VAI与体质指数(BMI)、WC、HC、UAC、TSF、SSF和ASF等体格指标之间的关系,并使用多元线性回归(逐步法)检验这些指标对VAI的影响。结果男大学生的VAI与年龄(A)、W、BMI、WC、HC、UAC、TSF、SSF、ASF均呈显著的正相关(P<0.01);而女大学生的VAI除A外,与其余指标均呈显著正相关(P<0.01);经多元线性回归检验,对男大学生VAI的影响最大的变量依次是BMI、SSF、A;对女大学生VAI的影响最大的变量依次是BMI、WC、SSF。结论 BMI、WC、HC等与VAI有极强相关性,可以通过BMI、SSF等的测量间接反映VAI,从而用于代谢性疾病以及部分慢性病发生风险的预测,帮助及早采取干预措施,来减少VAI相关疾病的疾病负担。

Objective To study the association between visceral adiposity index （VAI） and physical index, and to set up the linear regression equation, which will provide a scientific basis for further prevention and control of chronic diseases. Methods Cluster sampling method was employed to select 1256 college students from Guangdong province, including 430 boys and 826 girls. The data of H, W, WC, HC, UAC,TSF, SSF, ASF and VAI were recorded. The correlation between VAI and BMI, WC, HC, TSF, SSF and ASF were investigated using Pearson correlation test and multiple linear regression （stepwise）. Results Pearson correlation test showed that in males, VAI was significantly correlated with A, W, BMI, WC, HC, UAC, TSF, SSF and ASF （P 〈0. 01 ） ; and in the females, VAI was significantly correlated with all the index except for A. Muhiple linear regression showed that in males, BMI, SSF and age significantly predicted VAI. While in females, the significant indexes were BMI, WC, and SSF. Conclusion VAI is significantly correlated with BMI, WC, HC. BMI, SSF and etc. can indirectly reflect VAI, which will help to predict the risk of metabolic disease and chronic disease.