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目的 评价元江流域地区蚊帐的防疟作用。方法 对 1756名对象进行横断面调查,采用无条件逐步lo-gistic回归分析所得资料。结果 经单因素分析,在所调查的15个变量中,7个与间接荧光抗体实验（IFAT）阳性明显或极可能有统计学联系;逐步logistic多元回归分析结果为,使用蚊帐和年龄小于15岁的调整后比值比（OR）分别是0.578（95％CI:0.467～0.716）和0.418（95％CI:0.33～0.525）,这显示与预防疟疾感染有显著联系,但此二因素不存在统计学上的相互作用。结论 在这一地区,使用蚊帐对于防止疟疾感染有意义深远的作用;山区半山区下坝生产在田棚过夜人群的调整后OR值为0.328（95％CI:0.199～0.540）,这说明作用更明显;但这一保护作用受蚊帐覆盖率,媒介生物学特性和人类行为的影响。
Objective To evaluate the anti-malarial effect of mosquito nets in the area of the Yuanjiang River Basin. Methods A total of 1756 subjects were investigated by cross-sectional analysis. The data were analyzed by unconditional stepwise lo-gistic regression. Results According to univariate analysis, among the 15 variables investigated, 7 were significantly or most likely to be statistically associated with positive IFAP test; stepwise logistic multivariate regression analysis showed that using mosquito nets and children younger than 15 years Adjusted odds ratios (ORs) were 0.578 (95% CI: 0.467-0.716) and 0.418 (95% CI: 0.33-0.525), respectively, indicating a significant association with the prevention of malaria infection but none of these two factors were statistically significant On the interaction. Conclusions In this area, the use of mosquito nets is of far-reaching significance in preventing malaria infection. The adjusted odds ratio (OR) of overnight shelters in mountainous areas in the Mid-levels of mountainous areas is 0.328 (95% CI: 0.199-0.540), indicating that the effect is more Obvious; however, this protection is affected by nets coverage, media biology and human behavior.