设计：以社区正常人群为研究对象，社区干预试验。
Design: Healthy people in community were taken as the objects and community intervention was designed.
使用社区干预试验手段对790名在校中学生进行预防吸烟教育活动。
And 790 students had received a smoking prevention education program using a community trial.
这是一项前瞻性非随机性社区干预试验，旨在测试社区的生殖健康代理(CBRHAs)提供的避孕针剂。
This was a prospective non-randomized community intervention trial designed to test the provision of injectable contraceptives by community-based reproductive health agents (CBRHAs).
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