四川省西昌市吸毒人群首次吸毒情况的调查分析

目的:调查四川省西昌市吸毒人群首次吸毒的发生情况。方法:在四川省凉山彝族自治州西昌市戒毒所、拘留所和看守所调查吸毒人员的人口学特征,吸毒前吸烟和饮酒的情况,朋友、亲戚和家人吸毒的人数,首次吸毒的时间和使用毒品的方式和种类,吸毒前是否有被治安处理或违法行为。结果:共调查了619名吸毒人员,从出生到首次吸毒的发生率为4·08/100(95%可信区间为3·76-4·40)人年。在多因素Cox比例风险模型中,15a以前开始吸烟(危险率比值为1·58;95%可信区间为1·35-1·86),朋友中吸毒的人数(朋友中有1-4人吸毒危险率比值为1·25;95%可信区间为1·04-1·51,朋友中有5人及以上吸毒危险率比值为1·71;95%可信区间为1·39-2·09)和研究对象来源(拘留所和看守所危险率比值为1·52;95%可信区间为1·18-1·96)与首次吸毒的发生率有统计学意义。结论:需进一步了解首次吸毒发生的情况及其影响因素,为开展健康教育和行为干预来预防吸毒和有关疾病的传播提供科学依据。

A SURVEY ON DRUG INITIATION AMONG DRUG USERS IN XICHANG, SICHUAN PROVINCE, CHINA

Objective: To estimate the incidence of drug initiation among drug users recruited from the drug rehabilitation centers and detention centers in Xichang City,Sichuan Province. Methods: During May to July,2004,a survey was conducted to investigate the demographic characteristics,high risk behaviors before drug initiation,initial time,the route of administration and type of drugs, number of drug abusers in their friends and relatives, and times being published for illegal activities among drug users in Xichang City. Results:A total of 619 drug users were interviewed. The average incidence of drug initiation was 4.08/100 per-son years (95%CI:3.76-4.40). Multivariate Cox proportional hazard regression model indicated that smoking before 15 years old(HR: 1.58; 95%CI:1.35-1.86), number of friends who used drugs(1-4,HR:1.25;95%CI:1.04-1.51;over 5,HR: 1.71;95%CI:1.39-2.09)and place of recruitment (detention center,HR:1.52;95%CI: 1.18-1.96) were independently associated with time to drug initiation.Conclusion: Future research is expected to examine the risk factors of drug initiation,so as to provide suggestions for health education and behavioral intervention to ultimately prevent drug use and to protect people from contracting related blood-born diseases.