桂林地区学校伤寒副伤寒干预效果分析

Analysis of the interventional effect for typhoid and paratyphoid in Guiling area

目的用综合干预措施实现伤寒副伤寒干预效果及干预净效应的评价,为校区伤寒副伤寒的防制提供科学依据。方法采用整群分层配对的方法把研究区内符合条件的学校分为干预组和对照组,并对干预组采取水源消毒、卫生管理、健康教育等综合干预措施,通过比较干预前后的变化了解干预的效果以及干预的净效应。结果实施综合干预措施后,干预学校发病率为23/10万,较对照学校147/10万,有统计学意义,保护率为84.35%,效果指数IE为6.39,成本效益比为1∶7.08。结论饮用水定期消毒和健康教育等投入小的干预措施在校区内容易实施,也能够明显降低伤寒副伤寒发病率,是有效防制措施。

Objective To evaluate the interventional effect and interventional net effect of comprehensive intervention on typhoid and paratyphoid, and provide the scientific basis for the prevention and control of typhoid and paratyphoid at primary school and middle school. Method Schools met the requirements were divided into interventions and controls within the research region by random chester sampling. Comprehensive intervention including water disinfection, sanitary control, and health education was applied to intervention group. The changes before and after intervention were compared to understand the effect of intervention and net intervention. Results By applying comprehensive intervention, the morbidity after intervention within the interventional area was 23/100, 000, which was 147/100, 000 within the control area; Z2=23.21, that is significant difference statistically. The protective rate was 84.35%, the efficiency index （IE） was 6.39, and the cost-benefit ratio was 1 ： 7.08. Conclusion The morbidity of typhoid and paratyphoid was dropped obviously using comprehensive intervention. Comprehensive intervention is therefore, an effective prevention strategy.