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目的：探讨在一年级医学生中开展预防性传播疾病(STD）同伴教育的可行性。方法：整群抽样选取某医科大学一年级学生220人为干预组，219人为内对照组；在另一所医科大学抽取208人为外对照组。对干预组实施Sfl3同伴教育，通过前后两次问卷进行近期效果评价。结果：干预组、内对照组、外对照组基线STD知识均分分别为12．4、12．又12．2，三组间差异无显著性；干预后，三组知识均分分别为212、134、124，干预组明显高于两对照组（P＜0．01）；前后两次调查，各组男生的知识水平均高于女生（P＜0.05）。结论：在一年级医学生中开展STD同伴教育是可行而有效的。
Objective: To explore the feasibility of implementing preventive STD companion education among first-year medical students. Methods: One hundred and twenty-two students from a certain medical university were selected as the intervention group and 219 as the internal control group by cluster sampling. A total of 208 patients in another medical university were selected as the external control group. Sfl3 peer education was implemented in the intervention group, and the short-term effect was evaluated by questionnaire before and after. Results: The mean baseline STD scores of intervention group, internal control group and external control group were 12.4 and 12 respectively. And 12.2, no significant difference between the three groups; after intervention, the three groups of knowledge was 212,134,124, respectively, significantly higher than the intervention group two control groups (P <0.01); before and after the two surveys, The knowledge level of boys in each group was higher than that of girls (P <0.05). Conclusion: It is feasible and effective to carry out STD companion education among the first year medical students.