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目的：研究青少年婚前性行为及妊娠的影响因素。方法：采用二分类和多分类Ｌｏｇｉｓｔｉｃ模型对影响因素进行分析。结果：本人文化程度、恋爱年龄、对性问题的态度等对婚前性行为和妊娠的发生有重要影响。结论：对青少年进行性教育已是当务之急，重点应是性知识的传授和性道德的培养
Objective: To study the premarital sex and the influencing factors of pregnancy in adolescents. Methods: Two-class and multi-class Logistic models were used to analyze the influencing factors. Results: My education level, age of love, and attitude towards sexual issues have important influence on premarital sex and the occurrence of pregnancy. Conclusion: Sex education for adolescents is an urgent task. The emphasis should be on the transfer of sexual knowledge and the cultivation of sexual morality.