口岸检出HIV感染者危险因素的结构方程模型分析

The study of structural equation modeling of HIV carriers found at ports

目的研究HIV感染的直接、间接影响因素,探索其对HIV感染影响程度。方法以口岸检出的HIV感染者和非HIV感染者各133例为研究对象,以年龄、性别、国籍、文化程度、职业、劳务史、输血史、吸毒史、性伴侣数、是否有同性伴侣、不洁性生活史、是否为HIV感染者为显变量,以人口特征、社会因素、行为因素作为隐变量,构造结构方程模型。结果人口特征、社会因素和行为因素存在直接效应和间接效应影响,间接效应主要体现在不洁性生活史、性伴侣数和文化程度的作用。隐变量对HIV感染影响程度的排序依次为行为因素、人口特征和社会因素,同时三者之间两两有关联。结论显变量对隐变量有直接与间接效应的双重作用,隐变量之间又存在相互关联,共同影响着HIV感染。

Objective To construct a structural equation modeling（SEM） of HIV carriers found at ports,and to study the direct and indirect acting factors of HIV infection and their attribution level.Methods The epidemiologic feature of 133 HIV carriers found in ports was analyzed.The data of another 133 persons without HIV were also used for building SEM.The observed variables included age,gender,nationality,educational level,occupation,history of labor,sexual activity without protection,gay or not,number of sex partner,history of drug taking or blood transfusion.The latent variables included population characteristics,social factor or behavioral factor.Results The population characteristics,social factor or behavioral factor had direct and indirect effect.The variables with indirect effect included sexual activity without protection,number of sex partner and educational level.The important rank of latent variables was behavioral factor,population characteristics and social factor,and there were associations among each of them.Conclusions The observed variables had the direct and indirect effect on latent variables for HIV carriers,and there were associations among each of latent variables.