西安医学生性行为及其影响因素病例对照研究

Sexual behavior and its related factors among medical undergraduates in Xi'an city:a case-control study

目的了解医学本科生性行为现状及其影响因素。方法于2015年12月—2016年6月对西安某医学院本科生采用匿名自填问卷形式调查其一般人口学资料、性行为和相关性知识、性态度等。运用病例对照研究方法,将有性行为作为病例组,无性行为作为对照组,单因素统计分析采用χ2检验,多因素分析采用条件logistic回归分析。结果医学生性行为发生率为4.32%(430/9 950)。在发生性行为者中,男性中存在商业性行为的占13.6%(37/273),女性存在商业性行为的占4.3%(6/139),P<0.01;男男同性性行为构成比为12.5%(33/265)。年级(OR=0.65,95%CI=0.55~0.78)、月生活开支(OR=0.65,95%CI=0.52~0.80)、婚恋状况(OR=0.55,95%CI=0.44~0.71)、接受性教育(OR=1.77,95%CI=1.15~2.71)、婚前性行为态度(OR=1.30,95%CI=1.04~1.64)、交往前性行为态度(OR=0.69,95%CI=0.52~0.91)、对同性恋态度(OR=1.51,95%CI=1.14~21.99)、同学性行为估计(OR=1.62,95%CI=0.56~0.68)是与性行为发生有明显关联的影响因素。结论医学生性行为发生率相对较低,和性态度密切相关。

Objective To investigate the status and influencing factors of sexual behaviors among medical undergraduates.Methods An anonymous questionnaire survey on demography, sexual behavior and relevant attitudes and factors was conducted among 9 950 undergraduates in a medical university in Xi＇an city between December 2015 and June 2016. Then the participants reporting sexual behaviors were selected as the cases and those not reporting sexual behaviors as the controls.Univariate analysis with chi-square test and multivariate analysis with logistic regression were performed.Results The self-reported rate of sexual behavior was 4.32% （430/9 950） among the undergraduates. Of the participants with sexual behaviors, the males reported a high ratio of commercial sex compared to the females （13.6% [37/273] vs. 4.3% [6/139], P 〈 0.01） and 12.5% （33/265） of the males reported homosexual behavior. The results of logistic regression analysis demonstrated that grade （odds ratio [OR] = 0.65, 95% confidence interval [95% CI]： 0.55-0.78）, monthly living expenses （OR = 0.65, 95% CI： 0.52-0.80）, marriage status （OR = 0.55, 95% CI： 0.44-0.71）, receiving sexual education （OR = 1.77, 95% CI： 1.15-2.71）, attitude towards premarital sexual behavior （OR = 1.30, 95% CI： 1.04-1.64）, attitude towards the lover＇s history of sexual behavior with other partners （OR = 0.69, 95% CI： 0.52-0.91）, attitude towards homosexuality （OR = 1.51, 95% CI： 1.14-21.99）, and estimation on the prevalence of sexual behavior among classmates （OR = 1.62, 95% CI： 0.56-0.68） were significantly associated with sexual behavior among the graduates.Conclusion The prevalence rate of sexual behavior is relatively low and relates closely to attitudes towards sexual behavior among medical undergraduates.