title: Sexual behavior and awareness of Chinese university students in transition with implied risk of sexually transmitted diseases and HIV infection: a cross-sectional study.
abstract: BACKGROUND
  The vulnerability of young people to HIV and the recent emergence of the HIV epidemic in China have made it urgent to assess and update the HIV/STD risk profile of Chinese young people.
  
  
  METHODS
  A self-administered questionnaire survey with cross-sectional design was conducted among 22,493 undergraduate students in two universities in Ningbo, China. Bivariate trend analysis and multiple logistic regression analysis were used to compare sexual behaviors and awareness between grades.
  
  
  RESULTS
  Of respondents, 17.6% of males and 8.6% of females reported being sexually active. Condom was reported never/rarely used by 35% of sexually active students in both genders in the previous year. Pregnancy and induced abortion had each been experienced by about 10% of sexually active female students and the female partners of male students, and about 1.5% of sexually active students of both genders reported being diagnosed with an STD. Multivariate analysis revealed that students in lower grades, compared to those in higher grades, were more likely to have become sexually active before university, to have become aware of sex before high school, and to have been exposed to pornographic media before the age of 17 years, and for sexually active respondents of both genders, to have engaged in sex without using a condom.
  
  
  CONCLUSIONS
  Sexual behaviors of Chinese university students are poorly protected and sexual behaviors and awareness may have been undergoing rapid change, becoming active earlier and more risky. If this trend continues, vulnerable sexual network will grow among them that allow more expansion of sexually transmitted diseases and HIV.
authors.affiliation: Center for Disease Control and Prevention of Zhejiang Province, Hangzhou, China. qiaoqinma@yahoo.com.cn
authors.forename: Qiaoqin
authors.initials: Q
authors.lastname: Ma
authors.forename: Masako
authors.initials: M
authors.lastname: Ono-Kihara
authors.forename: Liming
authors.initials: L
authors.lastname: Cong
authors.forename: Guozhang
authors.initials: G
authors.lastname: Xu
authors.forename: Saman
authors.initials: S
authors.lastname: Zamani
authors.forename: Shahrzad Mortazavi
authors.initials: SM
authors.lastname: Ravari
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kihara
mesh_terms: D000028:Abortion, Induced / Q000706:statistics & numerical data; D000328:Adult; D000367:Age Factors; D002681:China / Q000453:epidemiology; D017280:Condoms / Q000706:statistics & numerical data; D003430:Cross-Sectional Studies; D005260:Female; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control / Q000523:psychology*; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D015999:Multivariate Analysis; D011247:Pregnancy; D012307:Risk Factors; D012309:Risk-Taking; D012737:Sex Factors; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000517:prevention & control / Q000523:psychology*; D012923:Social Class; D013334:Students / Q000523:psychology* / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires; D014495:Universities / Q000706:statistics & numerical data; D047568:Unsafe Sex / Q000523:psychology* / Q000706:statistics & numerical data